zink: Fix building on macOS

This fixes building on macOS:
  Disable ZINK_USE_DMABUF on macOS, it is unsupported.
  Import vk_mvk_moltenvk.h for MVK_VERSION in zink_resource.c.
  Add additional build arguments (see meson.build) to build properly.

To build on macOS, you will probably need to run:
  brew install bison llvm cmake libxext xquartz ninja xorgproto meson

And you also need to setup meson with something like:
  -Dmoltenvk-dir=/Users/<Username>/VulkanSDK/<VersionNumber>/MoltenVK
  -Dc_std=c11
Reviewed-by: Hoe Hao Cheng <haochengho12907@gmail.com>
Part-of: <mesa/mesa!14255>

meson.build

@@ -426,6 +426,15 @@ if system_has_kms_drm and not with_platform_android
   c_args += '-DVK_USE_PLATFORM_DISPLAY_KHR'
   cpp_args += '-DVK_USE_PLATFORM_DISPLAY_KHR'
 endif
+if host_machine.system() == 'darwin'
+  c_args += '-DVK_USE_PLATFORM_MACOS_MVK'
+  cpp_args += '-DVK_USE_PLATFORM_MACOS_MVK'
+  c_args += '-DVK_USE_PLATFORM_METAL_EXT'
+  cpp_args += '-DVK_USE_PLATFORM_METAL_EXT'
+  #macOS seems to need beta extensions to build for now:
+  c_args += '-DVK_ENABLE_BETA_EXTENSIONS'
+  cpp_args += '-DVK_ENABLE_BETA_EXTENSIONS'
+endif
 
 _egl = get_option('egl')
 if _egl == 'true'

src/gallium/drivers/zink/zink_resource.c

@@ -45,7 +45,7 @@
 #include "util/os_file.h"
 #include "frontend/sw_winsys.h"
 
-#ifndef _WIN32
+#if !defined(_WIN32) && !defined(__APPLE__)
 #define ZINK_USE_DMABUF
 #endif
 
@@ -58,6 +58,10 @@
 #define DRM_FORMAT_MOD_LINEAR 0
 #endif
 
+#if defined(__APPLE__)
+// Source of MVK_VERSION
+#include "MoltenVK/vk_mvk_moltenvk.h"
+#endif
 
 static bool
 equals_ivci(const void *a, const void *b)