[PATCH] arch/mips/boot/compressed/string.c: Fix build warnings

[zhaoxiao <zhaoxiao@uniontech.com>]

Fixes the following W=1 kernel build warning(s):
arch/mips/boot/compressed/string.c:11:7: warning: no previous prototype for 'memcpy' [-Wmissing-prototypes]
 void *memcpy(void *dest, const void *src, size_t n)
       ^~~~~~
arch/mips/boot/compressed/string.c:22:7: warning: no previous prototype for 'memset' [-Wmissing-prototypes]
 void *memset(void *s, int c, size_t n)
       ^~~~~~
arch/mips/boot/compressed/string.c:32:15: warning: no previous prototype for 'memmove' [-Wmissing-prototypes]
 void * __weak memmove(void *dest, const void *src, size_t n)
               ^~~~~~~

Signed-off-by: zhaoxiao <zhaoxiao@uniontech.com>
---
 arch/mips/boot/compressed/string.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/mips/boot/compressed/string.c b/arch/mips/boot/compressed/string.c
index 0b593b709228..d28996509f91 100644
--- a/arch/mips/boot/compressed/string.c
+++ b/arch/mips/boot/compressed/string.c
@@ -8,7 +8,7 @@
 #include <linux/compiler_attributes.h>
 #include <linux/types.h>
 
-void *memcpy(void *dest, const void *src, size_t n)
+static void *memcpy(void *dest, const void *src, size_t n)
 {
 	int i;
 	const char *s = src;
@@ -19,7 +19,7 @@ void *memcpy(void *dest, const void *src, size_t n)
 	return dest;
 }
 
-void *memset(void *s, int c, size_t n)
+static void *memset(void *s, int c, size_t n)
 {
 	int i;
 	char *ss = s;
@@ -29,7 +29,7 @@ void *memset(void *s, int c, size_t n)
 	return s;
 }
 
-void * __weak memmove(void *dest, const void *src, size_t n)
+static void * __weak memmove(void *dest, const void *src, size_t n)
 {
 	unsigned int i;
 	const char *s = src;
-- 
2.20.1