MII PHY autonego restart change

[SAITOH Masanobu <msaitoh%execsw.org@localhost>]

 Hi.

I've commited the following change now:

--------------
Module Name:    src
Committed By:   msaitoh
Date:           Mon Aug 24 04:23:41 UTC 2020

Modified Files:
        src/sys/dev/mii: ciphy.c mii_physubr.c miivar.h urlphy.c

Log Message:
 Don't do full initialization for autonego when just restarting autonego
because it's not required.

 This change reduce extra initialization which include PHY_RESET() which
caused long delay(max 500ms).


To generate a diff of this commit:
cvs rdiff -u -r1.40 -r1.41 src/sys/dev/mii/ciphy.c
cvs rdiff -u -r1.91 -r1.92 src/sys/dev/mii/mii_physubr.c
cvs rdiff -u -r1.72 -r1.73 src/sys/dev/mii/miivar.h
cvs rdiff -u -r1.36 -r1.37 src/sys/dev/mii/urlphy.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
--------------

 Linux also doesn't do full initialization when just restarting autonego.

 If you see any regression, please let me know.

Thanks.

-- 
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)