onie-support:  capture dmesg output

Closes issue #69

When debugging a remote system gathering a tarball of information is
*very* useful.  The current implementation was not capturing the
kernel log messages from the dmesg command.

For debugging the dmesg out is *critical*.

This patch adds the dmesg output to the ONIE support tarball.
Accton AS6700_32X: Add to support the r01c machine

The ``r01c`` machine uses another SPI flash and new partition table.
Current ``r0`` ONIE is no longer compatible with the new machine.
The patch will separate the ONIE into ``r0`` and ``r1``.  The ``r1``
ONIE is suitable for the ``r01c`` machine.

Signed-off-by: Curt Brune <curt@cumulusnetworks.com>
Accton Platforms: u-boot can't load files from eUSB device

The platforms are including:
- AS5710_54X
- AS6710_32X

Signed-off-by: Curt Brune <curt@cumulusnetworks.com>
QuantaMesh 3000 Series T3040-LY3

Specification
================================================================================
- A powerful Top-of-Rack Switch for Cloud Datacenters
- 40 100BASE-TX/1000BASE-T/10GBASE-T and 8 1/10GBASE-X SFP+ ports
- 1 RJ-45 out-of-band management port (10/100/1000M)
- 1 RJ-45 console port
- 1 USB2.0 port

How to compile ONIE
================================================================================
$ cd machine/quanta/quanta_ly3
$ ./build.sh all

How to compile demo installer.
================================================================================
$ cd machine/quanta/quanta_ly3
$ ./build.sh demo

How to compile html and pdf documents.
================================================================================
$ cd machine/quanta/quanta_ly3
$ ./build.sh docs

For further information, please take a look at ``machine/quanta/quanta_ly3/INSTALL``

Signed-off-by: Curt Brune <curt@cumulusnetworks.com>