Add active services count callback to lazy HALs. am: 57341bb19f am: e26268e44c

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/1513376

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie2a097b305f5c1e3f0ab51ebb385a3ac7287e0e5