Always read the rmu.bin file from the read-only section of the SPI
flash. Without this change vboot attempts to read this file from the
A or B section of the flash.
TEST=Build and run on Galileo Gen2
Change-Id: Ied8eaa2cd37645bf401aa957936943946bfd6182
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18803
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>