Expose mke2fs.conf to platform-tools sdk-repo build

It either needs to use this file this filegroup, or we'd need to move
the host definition to Android.bp (but it installs in the "wrong"
directory according to Soong).

Bug: 187222815
Change-Id: I5098f77d04738999c3ddba2b647678e6aff22eb1
1 file changed