mb/google/skyrim/var/skyrim: Add audio codec and amp support

Add two combination:
1. ALC5682I-VS and ALC1019
2. NAU88L25 and MAX98360

BUG=b:227165780, b:228879074
TEST=emerge-skyrim coreboot chromeos-bootimage

Signed-off-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Change-Id: I36d7b5c4e88825ceaa6922d9e3bed366f55a0d81
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63779
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-hsuan Hsu <yuhsuan@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/mainboard/google/skyrim/Kconfig

@@ -16,8 +16,10 @@ config BOARD_SPECIFIC_OPTIONS
 	select AMD_SOC_CONSOLE_UART
 	select BOARD_ROMSIZE_KB_16384
 	select DRIVERS_GENERIC_GPIO_KEYS
+	select DRIVERS_GENERIC_MAX98357A
 	select DRIVERS_I2C_GENERIC
 	select DRIVERS_I2C_HID
+	select DRIVERS_I2C_NAU8825
 	select DRIVERS_USB_HUB
 	select DRIVERS_WIFI_GENERIC
 	select EC_GOOGLE_CHROMEEC
@@ -27,6 +29,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select ELOG
 	select ELOG_GSMI
 	select FW_CONFIG
+	select FW_CONFIG_SOURCE_CHROMEEC_CBI
 	select I2C_TPM
 	select MAINBOARD_HAS_CHROMEOS
 	select MAINBOARD_HAS_TPM2