Fix Romulus power and reset button

The POWER_BUTTON and RESET_BUTTON direction needs to be set to `both`,
otherwise there is no interrupt generated and thus the buttons do not
work.
Change the direction to `both` fix the issue.

Fixes openbmc/openbmc#1437

Change-Id: If586dd2e44aa2a8790f045d1e37f4d8f3ea210c8
Signed-off-by: Lei YU <mine260309@gmail.com>
1 file changed