UPSTREAM: mmc-utils: make use of dependency information generated by gcc

While these dependency information was generated from the start of mmc-utils
it was never used.

Using these informations results in mmc being rebuild when e.g. mmc.h
was touched.

BUG=None
TEST=Compile

Signed-off-by: Uwe Kleine-Knig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Chris Ball <chris@printf.net>
(cherry picked from commit a04361659d1b394f1a8dde9c44de5a0846e5c771)
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>

Change-Id: Ic78e8487d37959a0563d4d8f764c2f7cbeb6dec0
Reviewed-on: https://chromium-review.googlesource.com/1114452
Commit-Ready: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
1 file changed