Update mainboard UART Kconfig for Whiskylake RVP.
TEST=Build and test on Whiskylake RVP.
By default we can still get console from cbmem, and
enable CONSOLE_SERIAL can get logs from UART port2.
Select other Coffeelake RVPs and check CONSOLE_SERIAL is enabled.
Change-Id: Ic56c019a12b467e5bede5648098d3fb82b56ba7e
Signed-off-by: Wonkyu Kim <wonkyu.kim@intel.com>
Reviewed-on: https://review.coreboot.org/c/30861
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>