src/lib: Remove braces for single statements

Fix the following warning detected by checkpatch.pl:

WARNING: braces {} are not necessary for single statement blocks

TEST=Build and run on Galileo Gen2

Change-Id: Ie4b41f6fb75142ddd75103a55e0347ed85e7e873
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18697
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins)

src/lib/memmove.c

@@ -5,15 +5,13 @@ void *memmove(void *vdest, const void *vsrc, size_t count)
 	char *dest = vdest;
 
 	if (dest <= src) {
-		while (count--) {
+		while (count--)
 			*dest++ = *src++;
-		}
 	} else {
 		src  += count - 1;
 		dest += count - 1;
-		while(count--) {
+		while(count--)
 			*dest-- = *src--;
-		}
 	}
 	return vdest;
 }