Bluetooth: fix indentation, formatting in dumpsys

Before
======
Enable log:
01-17 09:43:18   Enabled  by com.android.systemui
01-18 07:13:10  Disabled  by com.andorid.systemui

1 BLE Apps registered:
com.google.android.gms

After
=====
Enable log:
  02-06 07:49:07   Enabled  by system boot
  02-06 07:49:35  Disabled  by com.andorid.systemui

1 BLE App registered:
  com.google.android.gms

Test: run bugreport, see differences in dumpsys
Change-Id: I6086f7f97c1fcbdb860d70d9516fd5bf630a9f5e