hp/pavilion_m6_1035dx: Declare GPIO control block in ACPI

Only the WLAN control pin and the lid switch input are declared, as
those are the only pins whose function is known and tested.

Change-Id: Ia5871882884ba9bb6d63418b34e33f92ead669eb
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5463
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/mainboard/hp/pavilion_m6_1035dx/acpi/mainboard.asl

@@ -47,6 +47,17 @@
 		USBS, 1,
 	}
 
+	/* GPIO control block -- hardcoded to 0xfed80100 by AGESA */
+	OperationRegion (GPIO, SystemMemory, 0xfed80100, 0x100)
+	Field (GPIO, ByteAcc, NoLock, Preserve) {
+		Offset (0x39),
+		, 6,
+		GP57, 1,	/* out: WLAN control (rf-kill) */
+		Offset (0x76),
+		, 7,
+		GE22, 1,	/* General event 22 - connected to lid switch */
+	}
+
 	/*
 	 * Used by EC code on certain events
 	 *