media: rc: Add remote control event report from user space input

Some of user space applications need to send the remote key events
to kernel input subsystem, so for these type of applications this driver
enables them to send key events to kernel.
User has to send the key event type (pressed,repeated,released) and scan
code value.

Change-Id: I31a03044702020bd7bfd6cfdc310e65f85d282ef
Signed-off-by: Ravi Kumar V <kumarrav@codeaurora.org>