greybus: added warning message in case of missing widget

Additional warning message added to notify in case above layer tries to
access widget that is already removed from the list.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mark.greer@animalcreek.com>
Signed-off-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Vaibhav Agarwal 2016-06-30 18:45:35 +05:30 • committed by Alex Elder
commit bb296b4803