MIPS: Loongson: Fixup mem.c indentation

Replace whitespace by tabs.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: yanh@lemote.com
Cc: huhb@lemote.com
Cc: zhangfx@lemote.com
Patchwork: http://patchwork.linux-mips.org/patch/828/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/loongson/common/mem.c

@@ -20,6 +20,7 @@ void __init prom_init_memory(void)
 
 	add_memory_region(memsize << 20, LOONGSON_PCI_MEM_START - (memsize <<
 				20), BOOT_MEM_RESERVED);
+
 #ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
 	{
 		int bit;