[3/3] i9100: Making i9100 compile with pure SaberMod toolchains

Changing the Toolchain used to 4.8 (the 4.7 Kernel toolchain is named arm-eabi-4.8) and adding the Toolchains to carbon.dependancies

Change-Id: I4b3682c364e705b70a02b5d2d99535cfd3c1b949