add Linaro/SaberMod toolchains

Change-Id: I2e80c040d1c5c25719adeeadbf9f99a1d53e9ae1
track skk's hardware_ti_omap4xxx

Change-Id: Ie36611ac2e7ccb13a2962d2995b42f68e5913dac
track skk's repos

Change-Id: I8623600ea9e552a255ec422a9c61ff98145624c9