Remove other hardware from GPIOB pin 11 - 15. Left only SPI
	modified:   flight/pios/common/pios_l3g4200d.c
	modified:   flight/pios/inc/pios_l3g4200d.h
	modified:   flight/targets/boards/brainyfly/board_hw_defs.c
	modified:   flight/targets/boards/revolution/firmware/inc/pios_config.h