mb/google/zork: Use SSDT generator for Chrome EC audio codec device

This change drops the inclusion of codec.asl in DSDT for `GOOG0013`
device and instead uses the newly added Chrome EC audio codec driver
for filling in the device node in SSDT.

TEST=Verified that following node gets generated:
Scope (\_SB.PCI0.LPCB.EC0.CREC)
{
	Device (ECA0)
	{
		Name (_HID, "GOOG0013")  // _HID: Hardware ID
		Name (_UID, One)  // _UID: Unique ID
		Name (_DDN, "Cros EC audio codec")  // _DDN: DOS Device Name
		Method (_STA, 0, NotSerialized)  // _STA: Status
		{
			Return (0x0F)
		}
	}
}

Change-Id: I3e626ce01a3735ac2c966c0e95310be4c828b241
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43042
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/zork/variants/baseboard/devicetree.cb b/src/mainboard/google/zork/variants/baseboard/devicetree.cb
index 85ce4e6..159665f 100644
--- a/src/mainboard/google/zork/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/zork/variants/baseboard/devicetree.cb
@@ -163,6 +163,10 @@
 						register "remote_bus" = "9"
 						device generic 1.0 on end
 					end
+					chip ec/google/chromeec/audio_codec
+						register "uid" = "1"
+						device generic 0 on end
+					end
 				end
 			end
 		end