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/gm45/raminit.c

@@ -175,7 +175,7 @@ void get_gmch_info(sysinfo_t *sysinfo)
 		printk(BIOS_SPEW, "GMCH supports DDR3 with %d MT or less\n", sysinfo->max_ddr3_mt);
 	}
 
-	const unsigned max_fsb = (capid >> 28) & 0x3;
+	const unsigned int max_fsb = (capid >> 28) & 0x3;
 	switch (max_fsb) {
 		case 1:
 			sysinfo->max_fsb_mhz = 1067;