vboot_reference: remove trailing newline/space for make_dev_ssd

To make the output of kernel_config from make_dev_ssd more close to the original
images, we should eliminate the trailing newline/space.

BUG=chromium-os:13516
TEST=make_dev_ssd.sh # succcess

Change-Id: I17f030f8815dea22b04058456d98db6911888ef6

R=rspangler@chromium.org,clchiou@chromium.org

Review URL: http://codereview.chromium.org/6735009
1 file changed