media : rc : Kernel Component for Standby Processor Remote.

This kernel code adds support for passing remote controller
scan codes from user space to trigger key events. This is used
for propagating scan codes received from standby processor.

Change-Id: I75959e7aa18562912605a308a6e2ed6daf6d4ab1
Signed-off-by: Bamidi RaviKiran <bamidir@codeaurora.org>