Flo: Change source repos (shift from CAF-CM to AOSP)

As CM went with their weird move to go to CAF, fragmentation was to be seen
across nexus devices. I made those changes in an attempt to stop the current
incompatibilities with several kernels made from AOSP sources:

- Changing the device tree from CM to mine (based from carbon with some cm
changes). This way it will use non-CAF qcom drivers.

- Redirected the kernel source as well to ModdedPA which is the google's stock
kernel source.

Change-Id: I8a4b96d4c05d865de04e5e84570a5d3741041572