mb/google/brox: Enable HDA Codec ALC256

On Brox, HDA Codec used is ALC256. Add verb table for the same. Also,
add the related device tree changes for HDA related registers.
Realtek High Definition Audio Configuration-
Version : 5.0.3.1

BUG=b:317398558
BRANCH=None
TEST=verified HDA on Brox.

HDA Sound cards detected. Headphone working verified.
Device listed under sysfs as below:
cat /sys/bus/hdaudio/devices/ehdaudio0D0/chip_name
ID 256
cat /sys/bus/hdaudio/devices/ehdaudio0D0/vendor_name
Realtek

Change-Id: I1edd5aee053debe39b34048266703031c088cd00
Signed-off-by: Poornima Tom <poornima.tom@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79723
Reviewed-by: Shelley Chen <shchen@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/brox/Kconfig b/src/mainboard/google/brox/Kconfig
index e6d1f1e..007328f 100644
--- a/src/mainboard/google/brox/Kconfig
+++ b/src/mainboard/google/brox/Kconfig
@@ -47,6 +47,7 @@
 	select SOC_INTEL_CRASHLOG
 	select SOC_INTEL_RAPTORLAKE
 	select SOC_INTEL_ALDERLAKE_PCH_P
+	select SOC_INTEL_COMMON_BLOCK_HDA_VERB
 	select DRIVERS_INTEL_ISH
 	select SYSTEM_TYPE_LAPTOP
 	select TPM_GOOGLE_TI50