brcm47xx: fix special board handling for some devices

Some devices were renamed when converted from diag to in kernel board detection and it was not changed in netconfig. Devices not in the
kernel board detection are removed now.

This should close: #17111, #16968, #13202

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 41663