proprietary-files: Commonize msm8960 and msm8960dt where possible

Change-Id: Ie1f62c51899a43166683ca877533b3f6bd294b78
proprietary-files: Remove unneeded blobs

Change-Id: I12c826935f590d677020898a634efe7946ea4b0b
proprietary-files: Use stock ril

Change-Id: I58276755bc0e3e3db1c6a40beb5731e0ce6c2bcd