clangarm64: Properly embed manifest file

Our Clang based toolchain does not currently embed our manifest file
in a way that Windows understands. Explicitly tell Clang that we want LLD
to embed a manifest file.

Signed-off-by: Matthias Aßhauer <mha1993@live.de>

config.mak.uname

@@ -707,7 +707,7 @@ ifeq ($(uname_S),MINGW)
 	else ifeq (CLANGARM64,$(MSYSTEM))
 		prefix = /clangarm64
 		HOST_CPU = aarch64
-		BASIC_LDFLAGS += -Wl,--pic-executable,-e,mainCRTStartup
+		BASIC_LDFLAGS += -Wl,--pic-executable,-e,mainCRTStartup,/manifest:embed,/manifestinput:compat/win32/git.manifest
 	else
 		COMPAT_CFLAGS += -D_USE_32BIT_TIME_T
 		BASIC_LDFLAGS += -Wl,--large-address-aware