K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2018-04-30T02:18:19.052981Z
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svn:log
V 310
if_smsc: set MII BUSY bit to read/write PHY regs

Per the datasheet, the BUSY bit must be set when reading or writing PHY
registers.  From Linux commit 80928805babf.

Submitted by:	Arshan Khanifar
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D15217

END