bcm53xx: fix shebang in packet_steering.sh

Fixes: 6e555ac3ad26 ("bcm53xx: refactor packet steering init")
Signed-off-by: Rafał Miłecki <[email protected]>

target/linux/bcm53xx/base-files/usr/libexec/platform/packet-steering.sh

@@ -1,4 +1,4 @@
-#!/bin/sh /etc/rc.common
+#!/bin/sh
 
 packet_steering="$(uci -q get network.@globals[0].packet_steering)"
 flow_offloading="$(uci -q get firewall.@defaults[0].flow_offloading)"