intel/blorp: Support blits and clears on surfaces with offsets

For certain EGLImage cases, we represent a single slice or LOD of an
image with a byte offset to a tile and X/Y intratile offsets to the
given slice.  Most of i965 is fine with this but it breaks blorp.  This
is a terrible way to represent slices of a surface in EGL and we should
stop some day but that's a very scary and thorny path.  This gets blorp
to start working with those surfaces and fixes some dEQP EGL test bugs.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106629
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/intel/blorp/blorp.h

@@ -114,6 +114,9 @@ struct blorp_surf
     * that it contains a swizzle of RGBA and resource min LOD of 0.
     */
    struct blorp_address clear_color_addr;
+
+   /* Only allowed for simple 2D non-MSAA surfaces */
+   uint32_t tile_x_sa, tile_y_sa;
 };
 
 void