[PATCH] SIS900 must select MII

This patch fixes the following compile error caused by bk-netdev:

<--  snip  -->

...
  LD      .tmp_vmlinux1
drivers/built-in.o(.text+0x98528): In function `sis900_get_settings':
: undefined reference to `mii_ethtool_gset'
drivers/built-in.o(.text+0x98538): In function `sis900_set_settings':
: undefined reference to `mii_ethtool_sset'
drivers/built-in.o(.text+0x98517): In function `sis900_get_link':
: undefined reference to `mii_link_ok'
drivers/built-in.o(.text+0x98547): In function `sis900_nway_reset':
: undefined reference to `mii_nway_restart'
make: *** [.tmp_vmlinux1] Error 1

<--  snip  -->
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NDaniele Venzano <venza@brownhat.org>

drivers/net/Kconfig

@@ -1555,6 +1555,7 @@ config SIS900
 	tristate "SiS 900/7016 PCI Fast Ethernet Adapter support"
 	depends on NET_PCI && PCI
 	select CRC32
+	select MII
 	---help---
 	  This is a driver for the Fast Ethernet PCI network cards based on
 	  the SiS 900 and SiS 7016 chips. The SiS 900 core is also embedded in