enable qcomgpsd: Quectel EC25 modem GPS

Device has no u-blox chip (/dev/ttyHS0 missing). GPS is via the Quectel
EC25 LTE modem. Uncommented qcomgpsd in process_config.

GPS hardware confirmed working — modem returns fix via AT+QGPSLOC with
7 satellites, 1m accuracy. However qcomgpsd's diag interface reader
appears to stall after setup — the cereal gpsLocationExternal message
is not being populated. The diag subprocess exits as a zombie. Needs
further investigation into the ModemDiag interface.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

selfdrive/manager/process_config.py

@@ -84,7 +84,7 @@ procs = [
   PythonProcess("controlsd", "selfdrive.controls.controlsd", only_onroad),
   PythonProcess("deleter", "system.loggerd.deleter", always_run),
   PythonProcess("dmonitoringd", "selfdrive.monitoring.dmonitoringd", driverview, enabled=(not PC or WEBCAM)),
-  # PythonProcess("qcomgpsd", "system.qcomgpsd.qcomgpsd", qcomgps, enabled=TICI),  # Fixme
+  PythonProcess("qcomgpsd", "system.qcomgpsd.qcomgpsd", qcomgps, enabled=TICI),
   # PythonProcess("ugpsd", "system.ugpsd", only_onroad, enabled=TICI),
   #PythonProcess("navd", "selfdrive.navd.navd", only_onroad),
   PythonProcess("pandad", "selfdrive.boardd.pandad", always_run),