Fix Memory Info bug (0.00B), add sweep2wake, enable ccache while compilation.

Upstream patches from android_kernel_samsung_smdk4412 (branch cm-10.2) to fix memory info bug (0.00B) in Settings.

Sweep2wake added from cybojenix's sources

ccache, for speeding up compilation (i have a slow pc, dunno about you)

and, made it an unnamed kernel.