Fix build with gcc 4.8

Change-Id: I00c03521d2eadaf5e2ba301d3cef376a9ee2c586
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
msm8960: add -Wno-error=narrowing

This cause's narrowing conversion error on mako and probably any msm8960 builds

Change-Id: I1ec0db91a136891d91bcbe3904277963b0269eb5