Add new device: samsung-i747m (Galaxy S3 USA/Canada version)
This is a different, but similar device to the existing samsung-i9305. It has a Snapdragon S4 instead of the Exynos processor in the i9305, and an Adreno 225 GPU
Supported so far:
- Boot from internal flash
- Touchscreen
- Weston/Xwayland
- WiFi (with firmware)