Fix GATT not working due to address mismatch

If the initial connection is established when using RPA, device can
later decide to use it's Identity Address for reconnections, if it
doesn't care about privacy.
When we receive such Identity Address, we must translate it into pseudo
address before passing it further down the stack.

Test: Connect to device using RPA, try to reconnect when it advertise
      it's Public address
Change-Id: Icb8eed25e1aad7003f1a3e0fed684168a8344544