rawgpsd: retry injecting assistance data (#29115)

* rawgpsd: retry injecting assistance data

* sleep a bit

---------

Co-authored-by: Comma Device <device@comma.ai>

system/sensord/rawgps/rawgpsd.py

@@ -149,18 +149,22 @@ def downloader_loop(event):
     time.sleep(10)
 
 def inject_assistance():
-  try:
-    cmd = f"mmcli -m any --timeout 30 --location-inject-assistance-data={ASSIST_DATA_FILE}"
-    subprocess.check_output(cmd, stderr=subprocess.PIPE, shell=True)
-    cloudlog.info("successfully loaded assistance data")
-  except subprocess.CalledProcessError as e:
-    cloudlog.event(
-      "rawgps.assistance_loading_failed",
-      error=True,
-      cmd=e.cmd,
-      output=e.output,
-      returncode=e.returncode
-    )
+  for _ in range(5):
+    try:
+      cmd = f"mmcli -m any --timeout 30 --location-inject-assistance-data={ASSIST_DATA_FILE}"
+      subprocess.check_output(cmd, stderr=subprocess.PIPE, shell=True)
+      cloudlog.info("successfully loaded assistance data")
+      return
+    except subprocess.CalledProcessError as e:
+      cloudlog.event(
+        "rawgps.assistance_loading_failed",
+        error=True,
+        cmd=e.cmd,
+        output=e.output,
+        returncode=e.returncode
+      )
+    time.sleep(0.2)
+  cloudlog.error("failed to load assistance after retry")
 
 def setup_quectel(diag: ModemDiag) -> bool:
   ret = False