Revert "qcom-common: make selinux policy board/device-specific"

This reverts commit ef46c4963c5d3cd1f111fb90b380c3834b8c0ff8.

Change-Id: I8cc0f01b239edeeae428449ee459848a98f35ea6
Merge "Revert "qcom-common: make selinux policy board/device-specific"" into du44