mainboard: Use decimal for `device lapic 0x0 on`

Most boards use `device lapic 0 on` with zero written in decimal.
For the sake of consistency, update the remaining boards to follow suit.

Change-Id: I1d3b1ac107e33aae11189cdd5e719b8e48b10f08
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54359
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/mainboard/hp/snb_ivb_laptops/devicetree.cb b/src/mainboard/hp/snb_ivb_laptops/devicetree.cb
index 4cdda4e..7fc936d 100644
--- a/src/mainboard/hp/snb_ivb_laptops/devicetree.cb
+++ b/src/mainboard/hp/snb_ivb_laptops/devicetree.cb
@@ -20,7 +20,7 @@
 			register "acpi_c1" = "1"
 			register "acpi_c2" = "3"
 			register "acpi_c3" = "5"
-			device lapic 0x0 on end
+			device lapic 0 on end
 			device lapic 0xacac off end
 		end
 	end