mb/google/dedede: Add AUDIO_AMP FW_CONFIG in devicetree

Add AUDIO_AMP ports bit field in devicetree.

UNPROVISIONED 0
MAX98360 1
RT1015_I2C 2
RT1015P_AUTO 3

BUG=b:185082705
BRANCH=dedede
TEST=build pass

Signed-off-by: FrankChu <frank_chu@pegatron.corp-partner.google.com>
Change-Id: I54f1e44036857dc00df074c38fde0fa82e589320
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52317
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/dedede/variants/baseboard/devicetree.cb

@@ -10,6 +10,12 @@ fw_config
                 option TABLETMODE_DISABLED 0
                 option TABLETMODE_ENABLED 1
         end
+	field AUDIO_AMP 14 16
+		option UNPROVISIONED 0
+		option MAX98360 1
+		option RT1015_I2C 2
+		option RT1015P_AUTO 3
+	end
 end
 
 chip soc/intel/jasperlake