efi: include <string.h> for memcpy()/memset()

and fix these warnings,

efi/adv.c: In function ‘cleanup_adv’:
efi/adv.c:48:5: warning: implicit declaration of function ‘memcpy’ [-Wimplicit-function-declaration]
efi/adv.c: In function ‘syslinux_reset_adv’:
efi/adv.c:54:5: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration]

Signed-off-by: Matt Fleming <matt.fleming@intel.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/efi/adv.c b/efi/adv.c
index 3dec3cc8..b390fd8f 100644
--- a/efi/adv.c
+++ b/efi/adv.c
@@ -24,6 +24,7 @@
  */
 #define  _GNU_SOURCE
 
+#include <string.h>
 #include "adv.h"
 
 #define IS_SYSLINUX	/* remove this: test build only */