MIPS: Loongson: arch/mips/Makefile: Add missing whitespace

This patch add missing whitespace after every "+=" in the loongson
related part of arch/mips/Makefile.

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/827/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/Makefile

@@ -341,11 +341,11 @@ load-$(CONFIG_WR_PPMC)		+= 0xffffffff80100000
 #
 # Loongson family
 #
-core-$(CONFIG_MACH_LOONGSON) +=arch/mips/loongson/
+core-$(CONFIG_MACH_LOONGSON) += arch/mips/loongson/
 cflags-$(CONFIG_MACH_LOONGSON) += -I$(srctree)/arch/mips/include/asm/mach-loongson \
                     -mno-branch-likely
-load-$(CONFIG_LEMOTE_FULOONG2E) +=0xffffffff80100000
-load-$(CONFIG_LEMOTE_MACH2F) +=0xffffffff80200000
+load-$(CONFIG_LEMOTE_FULOONG2E) += 0xffffffff80100000
+load-$(CONFIG_LEMOTE_MACH2F) += 0xffffffff80200000
 
 #
 # MIPS Malta board