mb/ocp/deltalake: Select correct uart for console

Tested on OCP deltalake. The console now shows up on the serial.

Change-Id: If4c412c1ca749f1feba47b2ce0beb52d0111be86
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46223
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Christian Walter <christian.walter@9elements.com>

src/mainboard/ocp/deltalake/Kconfig

@@ -16,6 +16,10 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_LPC_TPM
 	select MAINBOARD_HAS_TPM2
 
+config UART_FOR_CONSOLE
+	int
+	default 1
+
 config POWER_STATE_DEFAULT_ON_AFTER_FAILURE
 	default n