machine_params: Add support for the rtc type machine_param

Add support for the rtc type machine_param, letter "c" for clock.

BUG=chrome-os-partner:16132
TEST=Used to build a spring image.

Change-Id: Id638da4d2416776d62ab022b66cf550c3095ad65
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/51455
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
1 file changed