Update device type correctly in the NVRAM at inquiry result

This patch checks for the NVRAM data when inquiry result
is received from the remote device. In case the device is
marked as LE only or BR/EDR only, and inquiry result is
received from the alternate transport, the device type is
marked as Dual mode in the NVRAM

Bug: 22604450
Change-Id: Id925e8bad152a33c2bd3c371ca42a6f9c694e3b0