switch: improve robo_switch_enable()

This is based on a patch by jcharest and the Broadcom SDK.


git-svn-id: svn://svn.openwrt.org/openwrt@35583 3c298f89-4303-0410-b956-a3cf2f4a3e73
switch: read and write vlan config from and to gigabit switches

This patch makes it possible to read and write the vlan config from and to recent switchs.

This is based on a patch by jcharest and the Broadcom SDK.


git-svn-id: svn://svn.openwrt.org/openwrt@35584 3c298f89-4303-0410-b956-a3cf2f4a3e73