uqmi: increase wait time before checking connection state

Increase the wait time before polling the connection state for the first
time.

Depending on the prior state of the modem, the first poll might still
return a connected state. The script then tries to establish a PDP
session, which subsequently fails as the modem by then is in scan state.

Increasing the wait-time to 3 seconds mitigates this from happening.

Signed-off-by: David Bauer <mail@david-bauer.net>

package/network/utils/uqmi/files/lib/netifd/proto/qmi.sh

@@ -253,7 +253,7 @@ proto_qmi_setup() {
 	uqmi -s -d "$device" --network-register > /dev/null 2>&1
 
 	echo "Waiting for network registration"
-	sleep 1
+	sleep 5
 	local registration_timeout=0
 	local registration_state=""
 	while true; do