radv: don't use hw resolves for r16g16 norm formats.

radeonsi has a workaround for this, but it uses a R16A16 format,
which vulkan doesn't have, we could probably come up with a work
around but for now just avoid hw resolves.

Fixes:
dEQP-VK.renderpass.suballocation.multisample.r16g16_*norm*

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Fixes: 2a04f548 (radv/meta: select resolve paths)
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit c727ea93)
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

Conflicts:
	src/amd/vulkan/radv_meta_resolve.c