Merge "Revert "Convert su/Android.mk to Android.bp"" am: 9c07e34fa9 am: 09daa33baa am: 815983612c

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/1699725

Change-Id: I72df20443195e4915d6644761a8f0fe75ef00f2c