Use New 4.8 Host Toolchain from Google

* While we are fixing SM Host Toolchains let's use the latest Google.

Change-Id: I1d5103c624e8e5bb93f8a46038cfd57263c69b76
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

Conflicts:
	core/combo/HOST_linux-x86.mk
	core/combo/HOST_linux-x86_64.mk