Fix gnss thread exit.

Change-Id: I534e703ea4a7f0f4a57ffa3da7ac226c149b0a3f
diff --git a/config b/config
index 3d81448..57c7d78 100755
--- a/config
+++ b/config
@@ -11,7 +11,7 @@
 CONFIG_MBTK_ALL_CID_SUPPORT=n
 
 # MBTK gnss mode (gnss_5311 / gnss_6228 / gnss_8122)
-CONFIG_MBTK_GNSS_MODE=gnss_8122
+CONFIG_MBTK_GNSS_MODE=gnss_5311
 
 # MBTK dump support?
 CONFIG_MBTK_DUMP_SUPPORT=n