meson: Add vulkan-drivers=all option

To build-test everything, helpful to check common code changes before pounding
CI.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Cc: mesa-stable
Reviewed-by: Eric Engestrom <eric@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25882>
(cherry picked from commit b70e948886)

.pick_status.json

@@ -1184,7 +1184,7 @@
         "description": "meson: Add vulkan-drivers=all option",
         "nominated": true,
         "nomination_type": 0,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null,
         "notes": null

meson.build

@@ -213,6 +213,12 @@ if _vulkan_drivers.contains('auto')
     error('Unknown OS @0@. Please pass -Dvulkan-drivers to set driver options. Patches gladly accepted to fix this.'.format(
           host_machine.system()))
   endif
+elif _vulkan_drivers.contains('all')
+   # Build every vulkan driver regardless of architecture.
+   _vulkan_drivers = ['amd', 'intel', 'intel_hasvk', 'swrast',
+                      'freedreno', 'panfrost', 'virtio', 'broadcom',
+                      'imagination-experimental', 'microsoft-experimental',
+                      'nouveau-experimental']
 endif
 
 with_intel_vk = _vulkan_drivers.contains('intel')

meson_options.txt

@@ -211,7 +211,7 @@ option(
   value : ['auto'],
   choices : ['auto', 'amd', 'broadcom', 'freedreno', 'intel', 'intel_hasvk',
              'panfrost', 'swrast', 'virtio', 'imagination-experimental',
-             'microsoft-experimental', 'nouveau-experimental'],
+             'microsoft-experimental', 'nouveau-experimental', 'all'],
   description : 'List of vulkan drivers to build. If this is set to auto ' +
                 'all drivers applicable to the target OS/architecture ' +
                 'will be built'