Remove empty newlines in #include blocks.

This makes clang-format useful on those.

Also add a bunch of forgotten transitive includes, which otherwise
prevented compilation.

src/citra/config.cpp

@@ -2,21 +2,15 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "config.h"
 #include <memory>
-
-#include <inih/cpp/INIReader.h>
-
 #include <SDL.h>
-
+#include <inih/cpp/INIReader.h>
 #include "citra/default_ini.h"
-
 #include "common/file_util.h"
 #include "common/logging/log.h"
-
 #include "core/settings.h"
 
-#include "config.h"
-
 Config::Config() {
     // TODO: Don't hardcode the path; let the frontend decide where to put the config files.
     sdl2_config_loc = FileUtil::GetUserPath(D_CONFIG_IDX) + "sdl2-config.ini";