HIDD: Address API Review concerns

 * Replace bare field usage with getter methods;
 * Remove Builder;
 * Move BluetoothHidDeviceCallback to inner class;
 * Remove toArray() and equals();
 * Throw IllegalArgumentException where applicable;
 * Add an Executor parameter before Callback;

Bug: 72168436, 72168126
Test: make update-api, make, make sl4a.Common
Change-Id: I13095458bf3ded7a376e8d20fd13df12ef426693
(cherry picked from commit f2f5dc35)