superio/ite/it8772f/chip.h: Use 'bool' when appropriate

Change-Id: I20c3298a920396718f0dc036e57faf8e46b82b2c
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70253
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/samsung/stumpy/devicetree.cb b/src/mainboard/samsung/stumpy/devicetree.cb
index 10aeb44..b348f14 100644
--- a/src/mainboard/samsung/stumpy/devicetree.cb
+++ b/src/mainboard/samsung/stumpy/devicetree.cb
@@ -69,11 +69,11 @@
 					# Enable GPIO52 as USBPWRON1#
 					register "gpio_set5" = "0x06"
 					# Skip keyboard init
-					register "skip_keyboard" = "1"
+					register "skip_keyboard" = "true"
 					# Enable PECI on TMPIN3
 					register "peci_tmpin" = "3"
 					# Enable FAN3
-					register "fan3_enable" = "1"
+					register "fan3_enable" = "true"
 
 					device pnp 2e.0 off end # FDC
 					device pnp 2e.1 on # Serial Port 1