wifi: Inform framework HAPD_IFACE_DISABLED when AP iface unavailable

This change adds callback to inform framework AP interface
HAPD_IFACE_DISABLED when driver event INTERFACE_UNAVAILABLE.

Bug: 197292709
Test: Local build & manual test disable/enable Wi-Fi
Change-Id: I8b6bad1a6444737e7cdbaaedb1eb0c85a86eb240
Merged-In: I8b6bad1a6444737e7cdbaaedb1eb0c85a86eb240
2 files changed