net: move MII outside of NET_ETHERNET, fix kconfig warning

We have USB, PCMCIA, and gigabit ethernet drivers that select
MII even though NET_ETHERNET is not enabled, so make MII not
be dependent on NET_ETHERNET.  It is still dependent on NET
and NETDEVICES.

Fixes kconfig unmet dependency warning (shortened, was very long string):

warning: (ARM_AT91_ETHER && NETDEVICES && NET_ETHERNET && ARM && ARCH_AT91RM9200 || ARM_KS8695_ETHER && NETDEVICES && NET_ETHERNET && ARM && ARCH_KS8695 || ... || IP1000 && NETDEVICES && NETDEV_1000 && PCI && EXPERIMENTAL || HAMACHI && NETDEVICES && NETDEV_1000 && PCI || R8169 && NETDEVICES && NETDEV_1000 && PCI || SIS190 && NETDEVICES && NETDEV_1000 && PCI || VIA_VELOCITY && NETDEVICES && NETDEV_1000 && PCI || ATL1 && NETDEVICES && NETDEV_1000 && PCI || ATL1E && NETDEVICES && NETDEV_1000 && PCI && EXPERIMENTAL || ATL1C && NETDEVICES && NETDEV_1000 && PCI && EXPERIMENTAL || JME && NETDEVICES && NETDEV_1000 && PCI || STMMAC_ETH && NETDEV_1000 && NETDEVICES && HAS_IOMEM || USB_PEGASUS && NETDEVICES && USB && NET || USB_RTL8150 && NETDEVICES && USB && NET && EXPERIMENTAL || USB_USBNET && NETDEVICES && USB && NET || PCMCIA_SMC91C92 && NETDEVICES && NET_PCMCIA && PCMCIA) selects MII which has unmet direct dependencies (NETDEVICES && NET_ETHERNET)
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com> [2006-NOV-30]
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/Kconfig

@@ -177,6 +177,13 @@ config NET_SB1000
 
 source "drivers/net/arcnet/Kconfig"
 
+config MII
+	tristate "Generic Media Independent Interface device support"
+	help
+	  Most ethernet controllers have MII transceiver either as an external
+	  or internal device.  It is safe to say Y or M here even if your
+	  ethernet card lacks MII.
+
 source "drivers/net/phy/Kconfig"
 
 #
@@ -212,13 +219,6 @@ menuconfig NET_ETHERNET
 
 if NET_ETHERNET
 
-config MII
-	tristate "Generic Media Independent Interface device support"
-	help
-	  Most ethernet controllers have MII transceiver either as an external
-	  or internal device.  It is safe to say Y or M here even if your
-	  ethernet card lack MII.
-
 config MACB
 	tristate "Atmel MACB support"
 	depends on AVR32 || ARCH_AT91SAM9260 || ARCH_AT91SAM9263 || ARCH_AT91SAM9G20 || ARCH_AT91SAM9G45 || ARCH_AT91CAP9