build: Correct Metal platform name
In `common_codegen.py` the Metal platform was defined without the "_EXT"
suffix
Change-Id: Ib36778735c09ae54d0e4a9bb0d7aa2fcec26b985
diff --git a/scripts/common_codegen.py b/scripts/common_codegen.py
index c739bfa..47bb632 100644
--- a/scripts/common_codegen.py
+++ b/scripts/common_codegen.py
@@ -52,7 +52,7 @@
'fuchsia' : 'VK_USE_PLATFORM_FUCHSIA',
'ios' : 'VK_USE_PLATFORM_IOS_MVK',
'macos' : 'VK_USE_PLATFORM_MACOS_MVK',
- 'metal' : 'VK_USE_PLATFORM_METAL',
+ 'metal' : 'VK_USE_PLATFORM_METAL_EXT',
'vi' : 'VK_USE_PLATFORM_VI_NN',
'wayland' : 'VK_USE_PLATFORM_WAYLAND_KHR',
'win32' : 'VK_USE_PLATFORM_WIN32_KHR',