kernel: use bcma-hcd.ko on bcm53xx for ohci

On bcm53xx we still need usb-ohci to support USB 1.1 devices and it
obviously needs bcma-hcd.ko that will init controller and register
platform device.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45994 3c298f89-4303-0410-b956-a3cf2f4a3e73