Revert "Move rild from public to vendor."

This reverts commit aed57d4e4d140b66eb349fdb10026c60429bda49.

Reason for revert: This CL is expected to break pre-submit tests (b/74486619)

Merged-in: I103c3faa1604fddc27b3b4602b587f2d733827b1
Change-Id: I0eb7a744e0d43ab15fc490e7e7c870d0f44e1401
9 files changed