Added RFM22B (OPLink) receiver.

Conflicts:
	flight/RevoMini/Makefile
	flight/RevoMini/System/inc/pios_config.h
	flight/RevoMini/System/pios_board.c
	ground/openpilotgcs/src/plugins/config/inputchannelform.cpp
Removed some unintended changes to RevoMini.

Conflicts:
	flight/RevoMini/System/inc/pios_config.h
	ground/openpilotgcs/src/plugins/config/inputchannelform.cpp
Added PPM output to OPLink firmware

Signed-off-by: Kenn Sebesta <kenn@eissq.com>
Reformatted PPM output code to match coding standards.

Signed-off-by: Kenn Sebesta <kenn@eissq.com>
Reformatted PPM output code to match coding standards.
Added file that got missed in patch.