mainboard/intel/apollolake_rvp: remove bootblock_mainboard_early_init()

Now that the SoC is configuring the UART pads there's no need to
implement bootblock_mainboard_early_init(). Remove it and
bootblock.c.

Change-Id: I2ae7ea38351733e1c9757cde20b79e1d19d0c1e5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13794
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
2 files changed