Add forceBE option to endian_utils.H
Add forceBE option to endian_utils.H

There are some helper function to force LE and I found a case
where I wanted to force BE so I added here also.

Change-Id: If5374c9a8ad12e391f78e3ea323776fdd8567b4f
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/69269
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: Hostboot CI <52521565bd8ea18a2b112942dce4f4220a97c2c8@us.ibm.com>
Reviewed-by: ANDRE A. MARIN <65293609e29ccd0ac899f5f3f03aea95be1b215f@us.ibm.com>
Reviewed-by: Louis Stermole <a2bef96d502debd02962600aef4d81d949c35039@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <ab93eca12e43608f33daa16a67357cd7b7e867ab@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot