Hidl callback should use same V10 object

Do not use 2 separate instances of the V10 callback object, since the
V10 keeps track of states that needs to be tracked consistently across
various method calls.

Bug: 238398920
Test: atest com.android.server.wifi
Change-Id: I668375d5db33e0e812d0b8b8786e683f875890a3
4 files changed