RIL: enable snapshot feature

snapshot feature will keep registration state for 20 seconds when LTE -> 3G
This will fix temporary no service when LTE -> 3G

BUG: 17665534
Change-Id: I5fce98b8c5cae4d69e801780475c9fd699a16734
Signed-off-by: tim.tm_lin <tim.tm_lin@htc.com>
Signed-off-by: Mohamad Ayyash <mkayyash@google.com>
diff --git a/init.flounder.rc b/init.flounder.rc
index a127b46..91da964 100644
--- a/init.flounder.rc
+++ b/init.flounder.rc
@@ -167,6 +167,7 @@
     enable netmgrd
     setprop rild.libpath /vendor/lib64/libril-qc-qmi-1.so
     setprop rild.libargs "-e wwan0"
+    setprop persist.radio.snapshot_enabled 1
 
 on property:ro.boot.baseband=US
     stop ril-daemon
@@ -178,6 +179,7 @@
     enable netmgrd
     setprop rild.libpath /vendor/lib64/libril-qc-qmi-1.so
     setprop rild.libargs "-e wwan0"
+    setprop persist.radio.snapshot_enabled 1
 
 # bugreport is triggered by holding down volume down, volume up and power
 service bugreport /system/bin/dumpstate -d -p -B \