Added req for rc_sync for QuecManager BETA and socat-at-bridge

ipk-source/socat-at-bridge/CONTROL/postinst

@@ -2,6 +2,7 @@
 
 echo "Enabling socat-at-bridge at startup"
 service socat-at-bridge enable
+rc_sync
 echo "Starting socat-at-bridge"
 service socat-at-bridge start
 echo "/dev/ttySMD11 is now available"

ipk-source/socat-at-bridge/CONTROL/preinst

@@ -0,0 +1,12 @@
+#!/bin/ash
+
+if [ -f /usr/bin/rc_sync ]; then
+    echo "/usr/bin/rc_sync exists. Continuing..."
+else
+    echo "/usr/bin/rc_sync not found. Downloading..."
+    curl -fsSL https://raw.githubusercontent.com/iamromulan/quectel-rgmii-toolkit/SDXPINN/ipk-source/sdxpinn-mount-fix/root/usr/bin/rc_sync -o /usr/bin/rc_sync
+    chmod +x /usr/bin/rc_sync
+fi
+
+exit 0
+

ipk-source/socat-at-bridge/CONTROL/prerm

@@ -6,6 +6,7 @@ service socat-at-bridge-smd7 disable
 echo "Stopping socat-at-bridge"
 service socat-at-bridge stop
 service socat-at-bridge-smd7 stop
+rc_sync
 
 exit 0