brcm63xx: fix CT-536p/CT-5621T support

Fix support for the Comtrend  CT-536+, CT-5361 and CT-5621T routers support.

Currently the firmware is broken for these routers, because there is a missing
bar in the code at the DTS file avoiding to match with DTS stuff at the kernel. This
causes the router boots without ethernet connectivity. The status led also has a typo.

Signed-off-by: Daniel Gonzalez <dgcbueu@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>