MIPS: Simplify the weak annotation with __weak

Found by

$ find arch/mips/ -name "*.c" | xargs -i grep -H weak {} | grep -v __weak

[Ralf: Made this bulletproof by including <linux/compiler.h>]
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/874/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/boot/compressed/dbg.c

@@ -5,11 +5,11 @@
  * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. othewise, you
  * need to implement your own putc().
  */
-
+#include <linux/compiler.h>
 #include <linux/init.h>
 #include <linux/types.h>
 
-void __attribute__ ((weak)) putc(char c)
+void __weak putc(char c)
 {
 }
 

arch/mips/oprofile/common.c

@@ -6,6 +6,7 @@
  * Copyright (C) 2004, 2005 Ralf Baechle
  * Copyright (C) 2005 MIPS Technologies, Inc.
  */
+#include <linux/compiler.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/oprofile.h>
@@ -14,9 +15,9 @@
 
 #include "op_impl.h"
 
-extern struct op_mips_model op_model_mipsxx_ops __attribute__((weak));
-extern struct op_mips_model op_model_rm9000_ops __attribute__((weak));
-extern struct op_mips_model op_model_loongson2_ops __attribute__((weak));
+extern struct op_mips_model op_model_mipsxx_ops __weak;
+extern struct op_mips_model op_model_rm9000_ops __weak;
+extern struct op_mips_model op_model_loongson2_ops __weak;
 
 static struct op_mips_model *model;