Now that vold uses Keystore2 rather than the Keymaster HAL directly, and
also the new version of Keymaster is called "KeyMint" instead, replace
most of the references to Keymaster in vold with Keystore.
(I decided not to include the "2" in most places, as it seemed
unnecessarily precise in most places, and it would be something that
might need to keep being updated. Only Keystore.{cpp,h} really need to
care about the version number.)
I didn't rename many things in cryptfs.cpp, as that file will be going
away soon anyway. I also left "wait_for_keymaster" and "vdc keymaster
earlyBootEnded" as-is for now, as those are referenced outside vold.
Bug: 183669495
Change-Id: I92cd648fae09f8c9769f7cf34dbf6c6e956be4e8
