Reland "Build sepolicy files for microdroid_vendor"

This reverts commit 2c2c1f7c00cdd8232c4bead9d05819d68d624df9.

Reason for revert: reland with a forward fix
Test: m on aosp_x86_64

Change-Id: I5c89ebeda88ca65286dff1e64841c2ada8634d34
1 file changed