Do nothing if we're debugging BIOS changes, unless forced (merge from R12 to R11 factory branch)

Cherr-Pick URL: http://codereview.chromium.org/6747008
Cherry-Pick URL: http://codereview.chromium.org/6673036

BUG=chromium-os:13095
TEST=Cherry-Picked.

R=yongjaek@chromium.org

Review URL: http://codereview.chromium.org/6813067

Change-Id: Id3504c4137584434b1d63a7c266a223351ec6b0e
1 file changed