cmake: Improve SDL driver integration

cmake/target_setup.cmake

@@ -18,4 +18,10 @@ function(ugfx_target_setup TARGET)
             ${ugfx_DEFS}
     )
 
+    target_link_libraries(
+        ${TARGET}
+        PRIVATE
+            ${ugfx_LIBS}
+    )
+
 endfunction()

drivers/multiple/SDL/driver.cmake

@@ -12,17 +12,13 @@ list(APPEND ugfx_DEFS
     GFX_OS_PRE_INIT_FUNCTION=sdl_driver_init
 )
 
+list(APPEND ugfx_LIBS
+	SDL2::SDL2
+)
+
 # Find SDL2
 find_package(
     SDL2
     REQUIRED
 )
 
-# Setup target
-function(ugfx_driver_setup_SDL TARGET)
-    target_link_libraries(
-        ${TARGET}
-        PRIVATE
-            SDL2::SDL2
-    )
-endfunction()