In the old logic, if /dev/gnss0 doesn't report location, it will fail back
to the default mock location. Now we change to only report default location if /dev/gnss0 is
not present.
Test: launch_cvd --start_gnss_proxy
Change-Id: Ie1026d5b4dd3e3c2ed1e2107232bcb94c3ba5079
Change-Id: I787b71d80be7875fc594d17b4296e7d28d9c2f5a
Test: Added following kernel cmdline and tested on local CF
gnss_cmdline.serdev=serial8250/serial0/serial0-0
gnss_cmdline.type=0
serdev_ttyport.pdev_tty_port=ttyS1
Change-Id: I3766c31672aa91341403105759b2fd997e7f8879
Test: End to end test: run "atest GnssAntennaInfoRegistrationTest" on cuttlefish and watch "adb logcat | grep -i GnssAntennaInfo". Other tests: atest GnssAntennaInfoTest, atest GnssAntennaInfoProviderTest, atest GnssManagerServiceTest, atest VtsHalGnssV2_1TargetTest, atest LocationManagerFineTest.
Bug: 124556515
Change-Id: Ia63a1f5022efdda52ed583a56a50f32807e83130