Add switch definition for the rtl8367b switch to the DTS/DTSi for
the Belkin F9K1109v1 that was mistakenly omitted from the initial
commit.
Fixes: 017ec068e3df (ramips: add support for Belkin F9K1109v1)
Signed-off-by: Kip Porterfield <kip.porterfield@gmail.com>