baytrail: Ensure touchscreen is in reset on S3->S5 transition
baytrail: Ensure touchscreen is in reset on S3->S5 transition

If the lid is open during shutdown, we were leaving the touchscreen
out of reset.  That increased S5 power consumption.

BUG=chrome-os-partner:25168
BRANCH=rambi
TEST=boot system, then power off with lid open
     'gpioget TOUCHSCREEN_RESET_L' --> 0

Change-Id: Ibcd4718f0e4197a8cbcf2bb88cfbfa38ed345ead
Signed-off-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/185027
Reviewed-by: Aaron Durbin <af0622ab041e8b0f8e5819838dcc93898196e71f@chromium.org>
Reviewed-by: Dave Parker <a0cbe8131c36e5e74e2155ca4ce91517847db706@chromium.org>

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