ci/broadcom: consolidate vc4-rpi3* jobs into a single vc4-rpi3-gl:armhf

Without reducing the coverage and using 4 runners instead of 9, most
runs take 10-13 minutes instead of 12-13 minutes for the egl job, 9-11
minutes for the piglit job, and 6-8 minutes for the deqp job.

Stress-tested over 40+ runs.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21902>

src/broadcom/ci/broadcom-rpi3-fails.txt

@@ -106,11 +106,12 @@ spec@khr_texture_compression_astc@basic-gl,Fail
 glx@glx-make-current,Crash
 glx@glx-multithread-buffer,Fail
 glx@glx-swap-pixmap-bad,Fail
-glx@glx-visuals-depth -pixmap,Fail
-glx@glx-visuals-stencil -pixmap,Fail
 glx@glx_arb_create_context_es2_profile@invalid opengl es version,Fail
 glx@glx_arb_create_context_no_error@no error,Fail
 
+# piglit: error: Test timed out.
+glx@glx_arb_sync_control@waitformsc,Fail
+
 glx@glx_ext_import_context@free context,Fail
 glx@glx_ext_import_context@get context id,Fail
 glx@glx_ext_import_context@get current display,Fail

src/broadcom/ci/broadcom-rpi3-flakes.txt

@@ -9,6 +9,8 @@ glx@glx-multi-window-single-context
 shaders@glsl-vs-loop
 shaders@glsl-vs-loop-nested
 spec@arb_framebuffer_srgb@blit renderbuffer srgb single_sampled enabled clear
+spec@ext_framebuffer_blit@fbo-sys-blit
+spec@ext_framebuffer_blit@fbo-sys-sub-blit
 spec@egl_chromium_sync_control@conformance
 spec@ext_packed_depth_stencil@fbo-stencil-gl_depth24_stencil8-readpixels
 
@@ -27,3 +29,6 @@ spec@!opengl 1.1@draw-copypixels-sync
 
 # 2022-12-29
 x11-dEQP-EGL.functional.color_clears.multi_context.gles2.rgba8888_pbuffer
+
+# flaky on wayland, was stable on x11
+spec@ext_image_dma_buf_import@ext_image_dma_buf_import

src/broadcom/ci/deqp-broadcom-rpi3-egl.toml

@@ -1,21 +0,0 @@
-# wayland
-[[deqp]]
-deqp = "/deqp/modules/egl/deqp-egl-wayland"
-caselists = ["/deqp/mustpass/egl-master.txt"]
-deqp_args = [
-    "--deqp-surface-width=256", "--deqp-surface-height=256",
-    "--deqp-surface-type=pbuffer", "--deqp-visibility=hidden",
-    "--deqp-gl-config-name=rgba8888d24s8ms0",
-]
-prefix = "wayland-"
-
-# x11
-[[deqp]]
-deqp = "/deqp/modules/egl/deqp-egl"
-caselists = ["/deqp/mustpass/egl-master.txt"]
-deqp_args = [
-    "--deqp-surface-width=256", "--deqp-surface-height=256",
-    "--deqp-surface-type=pbuffer", "--deqp-visibility=hidden",
-    "--deqp-gl-config-name=rgba8888d24s8ms0",
-]
-prefix = "x11-"

src/broadcom/ci/deqp-broadcom-rpi3-piglit.toml

@@ -1,6 +0,0 @@
-[[piglit]]
-piglit_folder = "/piglit"
-profile = "quick_gl"
-process_isolation = true
-  [piglit.env]
-  PIGLIT_PLATFORM = "mixed_glx_egl"

src/broadcom/ci/deqp-broadcom-rpi3.toml

@@ -24,8 +24,36 @@ deqp_args = [
     "--deqp-visibility=hidden",
 ]
 
+[[piglit]]
+piglit_folder = "/piglit"
+profile = "quick_gl"
+process_isolation = true
+  [piglit.env]
+  PIGLIT_PLATFORM = "mixed_glx_egl"
 
 [[piglit]]
 piglit_folder = "/piglit"
 profile = "quick_shader"
 process_isolation = true
+
+# wayland
+[[deqp]]
+deqp = "/deqp/modules/egl/deqp-egl-wayland"
+caselists = ["/deqp/mustpass/egl-master.txt"]
+deqp_args = [
+    "--deqp-surface-width=256", "--deqp-surface-height=256",
+    "--deqp-surface-type=pbuffer", "--deqp-visibility=hidden",
+    "--deqp-gl-config-name=rgba8888d24s8ms0",
+]
+prefix = "wayland-"
+
+# x11
+[[deqp]]
+deqp = "/deqp/modules/egl/deqp-egl"
+caselists = ["/deqp/mustpass/egl-master.txt"]
+deqp_args = [
+    "--deqp-surface-width=256", "--deqp-surface-height=256",
+    "--deqp-surface-type=pbuffer", "--deqp-visibility=hidden",
+    "--deqp-gl-config-name=rgba8888d24s8ms0",
+]
+prefix = "x11-"

src/broadcom/ci/gitlab-ci.yml

@@ -17,41 +17,20 @@
   variables:
     BM_BOOTFS: /boot/raspberrypi_armhf
 
-.vc4-rpi3-test:armhf:
+vc4-rpi3-gl:armhf:
   extends:
     - .broadcom-test:armhf
     - .vc4-rules
-  variables:
-    GPU_VERSION: broadcom-rpi3
-    HWCI_KERNEL_MODULES: vc4
   script:
     - ./install/bare-metal/poe-powered.sh
   tags:
     - igalia-rpi3
-
-vc4-rpi3:armhf:
-  extends:
-    - .vc4-rpi3-test:armhf
-  parallel: 3
-  variables:
-    DEQP_SUITE: broadcom-rpi3
-    PIGLIT_PLATFORM: gbm
-
-vc4-rpi3-egl:armhf:
-  extends:
-    - .vc4-rpi3-test:armhf
-  variables:
-    HWCI_START_WESTON: 1
-    DEQP_SUITE: broadcom-rpi3-egl
-
-vc4-rpi3-piglit-quick_gl:armhf:
-  extends:
-    - .vc4-rpi3-test:armhf
   parallel: 4
   variables:
-    FDO_CI_CONCURRENT: 1
-    HWCI_START_XORG: 1
-    DEQP_SUITE: broadcom-rpi3-piglit
+    GPU_VERSION: broadcom-rpi3
+    HWCI_KERNEL_MODULES: vc4
+    DEQP_SUITE: broadcom-rpi3
+    HWCI_START_WESTON: 1
 
 .v3d-rpi4-test:armhf:
   extends: