miitool: drop internal table of known MII, use phy drivers instead ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

miitool: add initial GbE support ...

The GbE support based on the patch for generic 'mii-tool', see
 http://ftp.debian.org/debian/pool/main/n/net-tools/net-tools_1.60-24.2.diff.gz

We need to note Jean-Christophe PLAGNIOL-VILLARD for his
initial GbE support patch:
 http://lists.infradead.org/pipermail/barebox/2013-February/012634.html

Generic 'mii-tool' GbE support patch has some disadvantages:
1. 1000baseT-HD is prefered to 1000baseT-FD;
2. show GbE-features for 10/100 only phys (e.g. Level One LXT971).
This patch fixes this disadvantages.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

miitool: change behaviour closer to linux' mii-tool ...

miitool without arguments will try to show status for all phys.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

miitool: Add option to scan mii buses ...

With the -s option all mii buses can be scanned for devices so
that they are available without doing network operations. Also,
now *all* phy devices on a mii bus can be examined, not only
the one attached to an ethernet device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

add 'miitool' command to view media-independent interface status ...

This command is based on the 'mii-diag' and 'mii-tool'
Unix utilities, but it lacks routines to manipulate
MII state (e.g. reset MII, restart autonegotiation
or force MII mode).

This version of the 'miitool' command has no GbE support,
but we can upgrade it in the future. The GbE support
patch for generic 'mii-tool' is here
http://ftp.debian.org/debian/pool/main/n/net-tools/net-tools_1.60-24.2.diff.gz

EXAMPLE:

barebox:/ miitool -vv /dev/phy0
negotiated 100baseTx-FD, link ok
  registers for MII PHY:
    3100 782d 0013 78e2 01e1 45e1 0007 2001
    0000 ffff ffff ffff ffff ffff ffff ffff
    0084 4780 0000 0000 0422 0000 0000 0000
    0000 0000 0080 0000 ffff 0000 0000 3660
  product info: Level One LXT971A rev 2
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>