kernel: disable ccache for MIPS builds

Kernel built by ccache and MIPS Android toolchain does not boot.
As a workaround this CL removes ccache usage from mips kernel builds.

BUG=none
Change-Id: I4ed024635cdb9bd216a7cbc51f249e43673fe4e4
Signed-off-by: Mihai Serban <mihai.serban@intel.com>
1 file changed