[FS#1208] Add support for Sky SR102 (brcm63xx) router which already can run patched OpenWrt

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - ppuzr (ppuzr) 

Attached to Project - LEDE Project
Summary - Add support for Sky SR102 (brcm63xx) router which already can run patched OpenWrt
Task Type - Feature Request
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - All
Due in Version - Undecided
Due Date - Undecided
Details - Sky SR102 can run patched OpenWrt mentioned on https://wiki.openwrt.org/toh/sky/sr102

The patch file can be found in that link and is quite small. I tried **openwrt-sr102-limited-whole-image-with-luci.zip** from that page and it worked. I suppose it should be relatively easy for LEDE to support it?

The patch file has inconsistent board_name, e.g. bskyb_63168, sr102, sr_102 , so some LED lights don't work and the router isn't accessible by network by default, I had to configure the network using serial console:

uci set network.lan.ifname='eth0.1'
uci set network.wan.ifname='eth0.2'
uci add network switch
uci set network. at switch[0].name='switch0'
uci set network. at switch[0].reset='1'
uci set network. at switch[0].enable_vlan='1'
uci add network switch_vlan
uci set network. at switch_vlan[0].device='switch0'
uci set network. at switch_vlan[0].vlan='1'
uci set network. at switch_vlan[0].ports='0 1 2 8t'
uci add network switch_vlan
uci set network. at switch_vlan[1].device='switch0'
uci set network. at switch_vlan[1].vlan='2'
uci set network. at switch_vlan[1].ports='3 8t'


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1208