staging: ks7010: group some cases in switch-case block in hostif_mib_set_confirm

This commit groups some case statements because its behaviour is
just do nothing which is the same as the default. Clean 'break'
keyword in those which are affected.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>