soc/intel/cannonlake: Make use of Intel SPI common block

TEST=Build and boot RVP

Change-Id: I5ff9867f08e43016a797b1b3719053df0c382174
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22362
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
3 files changed