Revert "t0lte: remove DeviceSettings"

This reverts commit b14b61a07bd2d0656b3e34aa41773999b9ba07cc.

Conflicts:
	common.mk

Change-Id: I005c5b664edd36f4f836e03718721c45dc7e37af
Merge "Revert "t0lte: remove DeviceSettings"" into jb-mr2