Use device_get_parent() to get hint on the NIC instead of going over ifnet(9) layer.

[glebius]

Test Plan

Boot with msk(4), bge(4).

[glebius]

Add mii_phy_mac_softc()/mii_dev_mac_softc() to get softc of the NIC w/o
going through ifnet(9) layer. Used in brgphy.c

Updating D1506: Use device_get_parent() to get hint on the NIC instead of going

over ifnet(9) layer.

[jhb]

Just some minor nits. Looks good in terms of the overall change.

sys/dev/mii/mii.c

653

I prefer "strcmp(foo, bar) == 0" to "!strcmp" since at a higher level it is checking for equality, so nice to see the "==" in the test.

sys/dev/mii/miivar.h

268

I think in style(9) the '*' is put at the start of the function name, so 'void<tab>*mii_...' rather than 'void *<tab>mii_...'

[glebius]

Address John's comments.

Updating D1506: Use device_get_parent() to get hint on the NIC instead of going

over ifnet(9) layer.