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/core/loader/elf.cpp

@@ -2,18 +2,16 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "core/loader/elf.h"
 #include <cstring>
 #include <memory>
 #include <string>
-
 #include "common/common_types.h"
 #include "common/file_util.h"
 #include "common/logging/log.h"
 #include "common/symbols.h"
-
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/resource_limit.h"
-#include "core/loader/elf.h"
 #include "core/memory.h"
 
 using Kernel::SharedPtr;