(Apple) Add missing dispserv_apple

Author: LibretroAdmin

Makefile.common

@@ -1354,6 +1354,10 @@ ifeq ($(HAVE_OPENDINGUX_FBDEV), 1)
    OBJ += gfx/drivers_context/opendingux_fbdev_ctx.o
 endif
 
+ifneq ($(findstring Darwin,$(OS)),)
+   OBJ += gfx/display_servers/dispserv_apple.o
+#endif
+
 ifeq ($(HAVE_X11), 1)
    OBJ += input/common/input_x11_common.o \
           input/drivers/x11_input.o \