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/southbridge/intel/i82801ix/sata.c b/src/southbridge/intel/i82801ix/sata.c
index d2bee88..df74123 100644
--- a/src/southbridge/intel/i82801ix/sata.c
+++ b/src/southbridge/intel/i82801ix/sata.c
@@ -152,7 +152,7 @@
 	}
 
 	/* Default to AHCI */
-	u8 sata_mode = get_int_option("sata_mode", 0);
+	u8 sata_mode = get_uint_option("sata_mode", 0);
 
 	/*
 	 * TODO: In contrast to ICH7 and PCH code we don't set
@@ -227,7 +227,7 @@
 	if (!config)
 		return;
 
-	u8 sata_mode = get_int_option("sata_mode", 0);
+	u8 sata_mode = get_uint_option("sata_mode", 0);
 
 	/*
 	 * Set SATA controller mode early so the resource allocator can