Add repo patcher

This is designed to let us patch simple fixes to repos without having to fork and maintain them. Current patches include HTCZ715E's WiFi region code fix and a patch to make Torch stay on when the screen is off.

The repo-resetter script should be run if you cannot repo sync due to unstaged changes. Run repo-patcher before every build with the command ./device/htc/pyramid/repo-patcher.sh

Signed-off-by: Sultanxda <sultanxda@gmail.com>