Extend support for requestRouteToHostAddress for backward compatibility

The gnss@2.0 HAL and the framework GNSS Location Provider code is
updated in Q to not call the deprecated requestRouteToHost() method.
However, devices upgrading to Q which are still using gnss@1.1 or
earlier HAL must continued to be supported.

Fixes: 121222025
Test: Tested with gnss@1.1 HAL and first API level P.  The
      ConnectivityService log message "This method exists only for
      app backwards compatibility and must not be called by system
      services" is not present for devices with first API level P.

Change-Id: I10199776ea413dc256dbf0771e6cb3eedb334495
Merged-In: Ifa60d8f2d60aba4c4e2894dc612c224d45e3992d
Merged-In: Ifa4ec98d5c942522dfd569664f169fa841d495ed
(cherry picked from commit 2eea7ac2)