bcm53xx: add switch ports for Buffalo WZR-900DHP & re-enable it
Specify the switch ports in the DTS file.
Re-enable it after it was disabled by commit e9672b1a8fa4 ("bcm53xx: switch to the
upstream DSA-based b53 driver").
Signed-off-by: SHIMAMOTO Takayoshi <[email protected]>
[rmilecki: reword commit & drop unneeded whitespace change]
Signed-off-by: Rafał Miłecki <[email protected]>