extra portability adjustments

src/qt_common/CMakeLists.txt

@@ -63,13 +63,9 @@ if (USE_DISCORD_PRESENCE)
 endif()
 
 # Qt itself may use Vulkan stuffs so we'd need to account for that as well
-# must match src/video_core/vulkan_common/vulkan.h logic
-if (WIN32 OR APPLE OR ANDROID OR PLATFORM_HAIKU OR PLATFORM_PS4)
-    # ...
-else()
-    find_package(X11 REQUIRED)
-    target_include_directories(video_core PUBLIC ${X11_INCLUDE_DIR})
-    target_link_libraries(video_core PUBLIC ${X11_LIBRARIES})
+if (X11_FOUND)
+    target_include_directories(qt_common PUBLIC ${X11_INCLUDE_DIR})
+    target_link_libraries(qt_common PUBLIC ${X11_LIBRARIES})
 endif()
 
 # TODO(crueter)