Enable CPU frequencies; enable USB tether; Linaro

Fix Linaro errors: most taken from:
https://android.googlesource.com/kernel/msm/+/a929ba63a6781384ae1a7355c24569d1564ca0a6
(thanks Mike)

Linaro also needs this:
https://github.com/M66B/cm-xtended/blob/master/kernel_fixes.patch
https://github.com/M66B/cm-xtended/blob/master/kernel_cifs.patch