Use proper naming for Identity Address

During Bonding, devices exchange "Identity Address Information", which
include Identity Address, and Identity Address Type.

Identity Address is either Public Address, or Static Random Address.

Thorugh stack, we improperly use "static" where we should use
"identity" to refer to this address.

Bug: 109827460
Test: compilation, just renamed variables.
Change-Id: Iccee1e8ae881e9b9f480e0bf05eea440a905109a