MIPS: BCM63XX: add support for the Netgear CVG834G

Add support for the Netgear CVG834G and enable the two UARTs, Ethernet
on the first MAC, PCI and the two leds.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Cc: Florian Fainelli <florian@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/5502/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>