[WIP] jewel: add support for new partition layout

If possible changes should try to preserve functionality for all device

Thanks goto CaptainThrowback for the updated twrp.fstab
ref: https://github.com/CaptainThrowback/omni_device_jewel_TWRP

Change-Id: Ifefbd2128dbeed40828538d5c27ae56fd1849499

Conflicts:

	BoardConfig.mk

cherry-pick from https://github.com/Haus1/android_device_htc_jewel/commit/d4046233fa874551396c0251a54d2d63f5d7f841