mb/intel/tglrvp: Add support for RT 1308

Add support for RT 1308 audio amplifier in TGLRVP.
We are using the i2c generic driver here to generate
the SSDT file. Datasheet:ALC-1308-CG-version-08.

BUG=none
BRANCH=none
TEST=Build and boot tglrvp successfully. In kernel console
use the "aplay -l" command to check soundcard is listed.

Change-Id: I41d205a3ab87db85baf49e9e8a582c226ba5832d
Signed-off-by: Shaunak Saha <shaunak.saha@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41808
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Reviewed-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
diff --git a/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb b/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb
index d15da30..d095ff3 100644
--- a/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb
+++ b/src/mainboard/intel/tglrvp/variants/tglrvp_up4/devicetree.cb
@@ -184,6 +184,12 @@
 		end
 
 		device pci 15.0 on	# I2C0			0xA0E8
+			chip drivers/i2c/generic
+				register "hid" = ""10EC1308""
+				register "name" = ""RTAM""
+				register "desc" = ""Realtek RT1308 Codec""
+				device i2c 10 on end
+			end
 			chip drivers/i2c/max98373
 				register "vmon_slot_no" = "4"
 				register "imon_slot_no" = "5"