Move set_homepage to top in libsdl_image

packages/l/libsdl_image/xmake.lua

@@ -1,5 +1,4 @@
 package("libsdl_image")
-    add_deps("libsdl")
 
     set_homepage("http://www.libsdl.org/projects/SDL_image/")
     set_description("Simple DirectMedia Layer image loading library")
@@ -12,6 +11,8 @@ package("libsdl_image")
         add_versions("2.0.5", "eee0927d1e7819d57c623fe3e2b3c6761c77c474fe9bc425e8674d30ac049b1c")
     end
 
+    add_deps("libsdl")
+
     add_links("SDL2_image")
 
     on_install("windows", "mingw", function (package)