src: Retype option API to use unsigned integers

The CMOS option system does not support negative integers. Thus, retype
and rename the option API functions to reflect this.

Change-Id: Id3480e5cfc0ec90674def7ef0919e0b7ac5b19b3
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52672
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
diff --git a/src/mainboard/ibase/mb899/superio_hwm.c b/src/mainboard/ibase/mb899/superio_hwm.c
index e1189a5..f2c313e 100644
--- a/src/mainboard/ibase/mb899/superio_hwm.c
+++ b/src/mainboard/ibase/mb899/superio_hwm.c
@@ -48,17 +48,17 @@
 
 void hwm_setup(void)
 {
-	int cpufan_control = 0, sysfan_control = 0;
-	int cpufan_speed = 0, sysfan_speed = 0;
-	int cpufan_temperature = 0, sysfan_temperature = 0;
+	unsigned int cpufan_control = 0, sysfan_control = 0;
+	unsigned int cpufan_speed = 0, sysfan_speed = 0;
+	unsigned int cpufan_temperature = 0, sysfan_temperature = 0;
 
-	cpufan_control = get_int_option("cpufan_cruise_control", FAN_CRUISE_CONTROL_DISABLED);
-	cpufan_speed = get_int_option("cpufan_speed", FAN_SPEED_5625);
-	//cpufan_temperature = get_int_option("cpufan_temperature", FAN_TEMPERATURE_30DEGC);
+	cpufan_control = get_uint_option("cpufan_cruise_control", FAN_CRUISE_CONTROL_DISABLED);
+	cpufan_speed = get_uint_option("cpufan_speed", FAN_SPEED_5625);
+	//cpufan_temperature = get_uint_option("cpufan_temperature", FAN_TEMPERATURE_30DEGC);
 
-	sysfan_control = get_int_option("sysfan_cruise_control", FAN_CRUISE_CONTROL_DISABLED);
-	sysfan_speed = get_int_option("sysfan_speed", FAN_SPEED_5625);
-	//sysfan_temperature = get_int_option("sysfan_temperature", FAN_TEMPERATURE_30DEGC);
+	sysfan_control = get_uint_option("sysfan_cruise_control", FAN_CRUISE_CONTROL_DISABLED);
+	sysfan_speed = get_uint_option("sysfan_speed", FAN_SPEED_5625);
+	//sysfan_temperature = get_uint_option("sysfan_temperature", FAN_TEMPERATURE_30DEGC);
 
 	// pnp_write_hwm5_index(HWM_BASE, 0x31, 0x20); // AVCC high limit
 	// pnp_write_hwm5_index(HWM_BASE, 0x34, 0x06); // VIN2 low limit