gpio-keys-polled improvements

Enrico Weigelt, metux IT consult
2019-04-16T19:57:21Z

Hello folks,

here're some improvements for the gpio-keys-polled driver.

The first patch isn't in the driver itself, but adds a little module helper
for conditionally declaring oftree module table if oftree is enabled
(only needed for the last patch)

have fun.

--mtx