Add missing breaks in reg_access.c.
TEST=Build and run on Galileo Gen2
Found-by: Converity Scan #1361261
Change-Id: I8be57f0758e5918a605e20ab9002747e0cc958e0
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/16069
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
d924fac759