base

Set mBound only when bind succeeds

Fixes an issue that TV input is disabled forever after package upgrade,
when it's upgraded while in use.  The root cause is as below:

- Package is killed while upgrade.
- Service disconnects, and tries to rebind for reconnecting, but bind fails
  because service is not available temporarily.  Still ServiceState.mBound is
  set to true.
- Should rebind next when callback is registered or new session is created,
  but doesn't because ServiceState is already marked bound.

Bug: 14981201
Change-Id: Ia5b0acb33f1247064213024438f114bc40238648