Patch merged into coreboot/master: commonlib: add endian related accessor functions

the following patch was just integrated into master:
commit f66a026d70961832164ca4edd701d762384786b3
Author: Aaron Durbin 
Date:   Thu Sep 17 11:24:08 2015 -0500

commonlib: add endian related accessor functions

This commit adds read/write functions for both big and
    little endian interpretations. Additionally there are
    variants that allow an offset to be provided into the
    source buffer.

BUG=None
    TEST=Wrote test harness for functions.  Also booted ARM QEMU
         through end of payload.

Change-Id: If44c4d489f0dab86a73b73580c039e364c7e517d
    Signed-off-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/11677
    Tested-by: build bot (Jenkins)
    Reviewed-by: Alexandru Gagniuc

See http://review.coreboot.org/11677 for details.

-gerrit