fsp1_1: use commonlib/endian.h routines

Now that the commonlib/endian.h routines have landed utilize
those in the FSP relocation code.

BUG=chrome-os-partner:44827
BRANCH=None
TEST=Built and booted glados.

Change-Id: If431d64fd2843bea864d971ca1ea06b07c0d6435
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11771
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed