network: dhcpcd fails to check link state for QMI interfaces

When acquiring an IP address, dhcpcd seems to think that the interface
is down or does not work properly for some reason. It will
subsequentially decide to exit which is not what we want here.

Therefore this patch tells dhcpcd to ignore the link state and keep
happily running.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/initscripts/networking/red

@@ -227,7 +227,7 @@ case "${1}" in
 				ip link set "${RED_DEV}" up &>/dev/null
 
 				# Start the DHCP client
-				dhcpcd_start "${RED_DEV}"
+				dhcpcd_start "${RED_DEV}" --nolink
 
 				# Done
 				exit 0