CMake: Build Vulkan backend on macOS

Source/Core/Core/CMakeLists.txt

@@ -293,6 +293,7 @@ PUBLIC
   videonull
   videoogl
   videosoftware
+  videovulkan
 
 PRIVATE
   ${LZO}
@@ -322,10 +323,6 @@ if(LIBUSB_FOUND)
   )
 endif()
 
-if(NOT APPLE)
-  target_link_libraries(core PUBLIC videovulkan)
-endif()
-
 if(WIN32)
   target_sources(core PRIVATE
     HW/EXI/BBA-TAP/TAP_Win32.cpp

Source/Core/VideoBackends/CMakeLists.txt

@@ -1,11 +1,9 @@
 add_subdirectory(OGL)
 add_subdirectory(Null)
 add_subdirectory(Software)
+add_subdirectory(Vulkan)
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
   add_subdirectory(D3D)
 endif()
 
-if(NOT APPLE)
-  add_subdirectory(Vulkan)
-endif()