oss: Mark loadhex static in hex2hex.c

Nothing outside of hex2hex.c references loadhex.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
diff --git a/sound/oss/hex2hex.c b/sound/oss/hex2hex.c
index 5460faa..041ef5c 100644
--- a/sound/oss/hex2hex.c
+++ b/sound/oss/hex2hex.c
@@ -12,7 +12,7 @@
 #define MAX_SIZE (256*1024)
 unsigned char buf[MAX_SIZE];
 
-int loadhex(FILE *inf, unsigned char *buf)
+static int loadhex(FILE *inf, unsigned char *buf)
 {
 	int l=0, c, i;