src/[arch-lib]: change "unsigned" to "unsigned int"

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Ibb7b48a7a144421aff29acbb7ac30968ae5fe5ab
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36329
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/drivers/pc80/rtc/mc146818rtc_romcc.c

@@ -74,10 +74,10 @@ static inline __attribute__((unused)) int do_normal_boot(void)
 	return boot_use_normal(byte);
 }
 
-unsigned read_option_lowlevel(unsigned start, unsigned size, unsigned def)
+unsigned int read_option_lowlevel(unsigned int start, unsigned int size, unsigned int def)
 {
 #if CONFIG(USE_OPTION_TABLE)
-	unsigned byte;
+	unsigned int byte;
 
 	byte = cmos_read(start/8);
 	return (byte >> (start & 7U)) & ((1U << size) - 1U);