pvr: Add VK_KHR_get_surface_capabilities2

Common vulkan wsi code already exposes the *2() functions (as well as
the vulkan 1.0 equivalents), so we might as well expose this extension.

Coverage in dEQP is dEQP-VK.wsi.*.surface.query_capabilities2, which
are all currently unsupported as we do not expose any platform surface
extensions.

Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Reviewed-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24489>

src/imagination/vulkan/pvr_device.c

@@ -143,6 +143,7 @@ static const struct vk_instance_extension_table pvr_instance_extensions = {
    .KHR_external_memory_capabilities = true,
    .KHR_get_display_properties2 = PVR_USE_WSI_PLATFORM_DISPLAY,
    .KHR_get_physical_device_properties2 = true,
+   .KHR_get_surface_capabilities2 = PVR_USE_WSI_PLATFORM,
    .KHR_surface = PVR_USE_WSI_PLATFORM,
    .EXT_debug_report = true,
    .EXT_debug_utils = true,