Fix the issue where HID connection was failing on first connection randomly.

Made changes in HidService to send a STATE_CONNECTING broadcast when HIDService.connect() is invoked;
Also before rejecting the incoming connection, check if the connection is transitioning from STATE_DISCONNECTED to STATE_CONNECTED and then only do a disconnectHidNative(). The normal flow of HID connect would transition from STATE_CONNECTING to STATE_CONNECTED

Change-Id: Ia416e3a70fc6c3561c3530091691367c5da2674c