Add test controller instruction for standby
Add test controller instruction for standby

Add test controller instruction for standby

Testing Done:   No test done. The steps described was copied from
                discussion with Toshiba in ENG-458
Bug Number:     Trivial
Review URL:     https://reviews.leaflabs.com/r/1839/
Reviewed by:    Eli Sennesh <esennesh@leaflabs.com>
                Morgan Girling <girling_morgan@projectara.com>

Signed-off-by:  Jun Li <4a139eac5426aee89571cee0a0f52cc73d82e960@projectara.com>

gregkh/bootrom-tools,projectara/bootrom-tools,projectara/bootrom-tools,gregkh/bootrom-tools,gregkh/bootrom-tools,projectara/bootrom-tools