use cfx-Toolchain 4.8 for kernel

Change-Id: Ie02976b19dc0a69b1abf9e389c81d84cb1c52901
Revert "use cfx-Toolchain 4.8 for kernel"

This reverts commit 8fd925d4ed13f98343ab8a2fdf9185b3571d852a.
Merge branch 'jb-mv' of git://github.com/Mustaavalkosta/android_device_htc_ace into jb-mr1