kernel: Pantech: Initial Pantech support.

Change-Id: Ica166a7735d1cbd2d030687b0a87b1cf2016883e
Add Pantech :camera: based in caf/jb_rel_rb4.2

Include caf/jb_2.5.3 ION/IOMMU port.

Currently only have added the original kernel drivers. Because there are new commits that must be added.

Change-Id: I67c6a9a7d5d86656c818e6d329e4eccb4c503c03