mb/google/skyrim: Enable console UART

BUG=b:214414501
TEST=builds

Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: I053909ab73c1aa053f35a505b37571ff23adde89
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62147
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

src/mainboard/google/skyrim/Kconfig

@@ -16,6 +16,7 @@ config AMD_FWM_POSITION_INDEX
 
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
+	select AMD_SOC_CONSOLE_UART
 	select BOARD_ROMSIZE_KB_16384
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_ESPI

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

@@ -7,4 +7,5 @@ chip soc/amd/sabrina
 			end
 		end
 	end # domain
+	device ref uart_0 on end # UART0
 end	# chip soc/amd/sabrina