To build:
- Clone device tree to /path_to_your_cm_folder/device/huawei/hws7300u.
- Connect pad to pc with working adb connection and run extract-files.sh to get vendor stuff (stored to /path_to_your_cm_folder/vendor/huawei/hws7300u).
- Run in terminal from root of cm10 folder: source build/envsetup.sh && brunch hws7300u