Added 8 channel PPM output to PIOS.
Reformatted PPM output code to match coding standards.

Signed-off-by: Kenn Sebesta <kenn@eissq.com>

Conflicts:
	flight/PiOS/Common/pios_rfm22b.c
	flight/targets/PipXtreme/System/pios_board.c
Reformatted PPM output code to match coding standards.
PiOS PPM Out: copy to f3 and f4
Sparky: enable PPM output from CH6