src/[northbridge,security]: change "unsigned" to "unsigned int"

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: If6b5930f78c3da6dcefaa7b6202cd0424a24525b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36331
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/northbridge/intel/haswell/gma.c

@@ -205,7 +205,7 @@ static inline void gtt_write_regs(const struct gt_reg *gt)
 #define GTT_RETRY 1000
 int gtt_poll(u32 reg, u32 mask, u32 value)
 {
-	unsigned try = GTT_RETRY;
+	unsigned int try = GTT_RETRY;
 	u32 data;
 
 	while (try--) {