Pull up following revision(s) (requested by msaitoh in ticket #662):

sys/dev/pcmcia/if_xi.c: revision 1.93
sys/arch/x86/pci/if_vmx.c: revision 1.54
sys/dev/pci/if_de.c: revision 1.165
sys/arch/arm/ti/if_cpsw.c: revision 1.10
sys/arch/arm/omap/if_cpsw.c: revision 1.26
sys/dev/isa/if_iy.c: revision 1.112
sys/dev/pcmcia/if_ray.c: revision 1.96

Add ETHER_LOCK() and ETHER_UNLOCK() to protect ec_multiaddrs.

XXX These drivers don't check whether enm_addrlo and enm_addrhi are the same
or not, so it won't work correctly if an multicast address entry has a range.

Protect ec_multicnt.

(martin)