radv: handle 10-bit format clamping workaround.

This fixes:
dEQP-VK.api.copy_and_blit.core.blit_image.all_formats.*
for a2r10g10b10 formats as destination on SI/CIK hardware.

This adds support to the meta program for emitting 10-bit
outputs, and adds 10-bit support to the fragment shader key.

It also only does the int8/10 on SI/CIK.

Fixes: f4e499ec7 (radv: add initial non-conformant radv vulkan driver)
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/amd/vulkan/radv_meta_blit.c

@@ -695,6 +695,8 @@ static VkFormat pipeline_formats[] = {
    VK_FORMAT_R8G8B8A8_UNORM,
    VK_FORMAT_R8G8B8A8_UINT,
    VK_FORMAT_R8G8B8A8_SINT,
+   VK_FORMAT_A2R10G10B10_UINT_PACK32,
+   VK_FORMAT_A2R10G10B10_SINT_PACK32,
    VK_FORMAT_R16G16B16A16_UNORM,
    VK_FORMAT_R16G16B16A16_SNORM,
    VK_FORMAT_R16G16B16A16_UINT,