Add Linaro 4.8 and 4.7.4 toolchains
	Some devices do not accept the newer 4.8.3/4.9 toolchain combo, resulting in failed builds or compilattion errors, to avoid this, we add both options, giving precedence to the earlier versions, as to allow for smoother builds on older devices
		Signed off by: Soupy031 <soupy031@master>