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/security/vboot/vbnv.c

@@ -43,7 +43,7 @@ static inline uint8_t vbnv_data(int index)
 /* Return CRC-8 of the data, using x^8 + x^2 + x + 1 polynomial. */
 static uint8_t crc8_vbnv(const uint8_t *data, int len)
 {
-	unsigned crc = 0;
+	unsigned int crc = 0;
 	int i, j;
 
 	for (j = len; j; j--, data++) {