drivers/intel/fsp2_0: FSP driver handles all FSP errors

Move all FSP error handling into the FSP 2.0 driver.  This removes the
need to implement error handling within the SOC code.

TEST=Build and run on Galileo Gen2

Change-Id: I4d548b4c90d369d3857c24f50f93e7db7e9d3028
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/15853
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
6 files changed