radv: adjust the maximum number of coverage samples for VRS

It should actually be 4 because the maximum fragment size supported
by the hardware is 2x2.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <mesa/mesa!8100>

src/amd/vulkan/radv_device.c

@@ -2147,7 +2147,7 @@ void radv_GetPhysicalDeviceProperties2(
 			props->fragmentShadingRateNonTrivialCombinerOps = true;
 			props->maxFragmentSize = (VkExtent2D) { 2, 2 };
 			props->maxFragmentSizeAspectRatio = 1;
-			props->maxFragmentShadingRateCoverageSamples = 1;
+			props->maxFragmentShadingRateCoverageSamples = 2 * 2;
 			props->maxFragmentShadingRateRasterizationSamples =
 				VK_SAMPLE_COUNT_1_BIT |
 				VK_SAMPLE_COUNT_2_BIT |