kernel: kmod-libphy, kmod-tg3: fix load order

kernel: kmod-libphy, kmod-tg3: fix load order

This fixes the following error:
tg3: Unknown symbol mdiobus_alloc_size (err 0)
tg3: Unknown symbol phy_ethtool_sset (err 0)
tg3: Unknown symbol phy_mii_ioctl (err 0)
tg3: Unknown symbol phy_connect (err 0)
tg3: Unknown symbol mdiobus_register (err 0)
tg3: Unknown symbol mdiobus_free (err 0)
tg3: Unknown symbol phy_start (err 0)
tg3: Unknown symbol phy_start_aneg (err 0)
tg3: Unknown symbol mdiobus_unregister (err 0)
tg3: Unknown symbol phy_ethtool_gset (err 0)
tg3: Unknown symbol phy_stop (err 0)
tg3: Unknown symbol phy_disconnect (err 0)

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37904 3c298f89-4303-0410-b956-a3cf2f4a3e73