Make a casting LayoutInflater.inflate.

[NightlyNexus]

variants of

inline fun <reified T: View> LayoutInflater.inflate(...) : T {
  return inflate(...) as T
}

The Android SDK now helps me out in View.findViewById but not with LayoutInflater.inflate.
(filed here: https://issuetracker.google.com/issues/64120102)

[jaredsburrows]

@JakeWharton Can a PR be made for this?