Allow bypassing setup for Auto in startDockOrHome

Auto allows for setup deferral, so keycode presses for HOME should
propagate to the application layer when user setup is in progress.

Bug: 140787161
Test: KEYCODE_HOME should trigger an intent with Intent.CATEGORY_HOME
Change-Id: I05751f93c44405b28f93789e6f8e6cf0a3f34524
Signed-off-by: Julius D'souza <jdsouza@google.com>