commonlib/region: allow empty mmap()/munmap() in region_device_ops

Instead of assuming all region_devices have an mmap() and munmap()
implementation fail those calls when one isn't provided.

BUG=chrome-os-partner:56151

Change-Id: I9b03e084aa604d52d6b5bab47c0bf99d9fbcd422
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/16190
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

0 files changed, 0 insertions, 0 deletions