dozen: Increase optimalBufferCopy*Alignment

D3D12 requires the offset to be 512B-aligned and row pitch to be
256B-aligned for copy commands.  There will need to be a fallback
written eventually because Vulkan has no such requirements but these
will remain the optimal limits as they allow using the D3D12 copy
commands directly.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17388>

src/microsoft/vulkan/dzn_device.c

@@ -1501,8 +1501,8 @@ dzn_GetPhysicalDeviceProperties2(VkPhysicalDevice physicalDevice,
       .lineWidthGranularity                     = 0.0f,
       .strictLines                              = 0,
       .standardSampleLocations                  = false,
-      .optimalBufferCopyOffsetAlignment         = 1,
-      .optimalBufferCopyRowPitchAlignment       = 1,
+      .optimalBufferCopyOffsetAlignment         = D3D12_TEXTURE_DATA_PLACEMENT_ALIGNMENT,
+      .optimalBufferCopyRowPitchAlignment       = D3D12_TEXTURE_DATA_PITCH_ALIGNMENT,
       .nonCoherentAtomSize                      = 256,
    };