newbitmaps: Change build targets from x86/arm to "profiles".

The difference of firmware bitmaps won't rely on platform (x86/arm) in future;
instead, things will differ by rescaling & message contents.

To support that, we need to change build target from "platform" to "profiles".

To build all platforms, run "make" in top leve (or "make all" in images).
To debug (en locale without rescaling), run "make" in images folder.
To debug a specific profile, run "make $PROFILE" in images folder.

BRANCH=none
BUG=chrome-os-partner:11078, chrome-os-partner:12790
TEST=make # all profiles generated in images/out_*/*.bin

Change-Id: Iaabf160b1b2bc844d230188eb593daa8a597d378
Reviewed-on: https://gerrit.chromium.org/gerrit/30683
Commit-Ready: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
5 files changed