Make BluetoothStateChangeCallback oneway to prevent waiting on response.

Test: Connected bluetooth devices(included Headset/HID devices), and
made bluetooth enabling/disabling over 1000 times, no other side effect
observed.

Bug: 38485770

Change-Id: Ia3959d2441aece39a79ab2d662b57790a78df674
Signed-off-by: xutianguo <xutianguo@xiaomi.com>
(cherry picked from commit 95e1e21a639318bb3399c394707624393cfa2300)
1 file changed