soc/intel/skylake: use unique _uid

There's two cases of 1 being used.  This changes the
eighth instance to use 8.

Change-Id: I7057a4345dadcc6f8fb43093844d27007444f481
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://review.coreboot.org/27603
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/soc/intel/skylake/acpi/irqlinks.asl

@@ -389,7 +389,7 @@ Device (LNKG)
 Device (LNKH)
 {
 	Name (_HID, EISAID ("PNP0C0F"))
-	Name (_UID, 1)
+	Name (_UID, 8)
 
 	Name (_PRS, ResourceTemplate ()
 	{