[U-Boot] Add support for SPI NOR on the Freescale MCIMX6SLEVK Board

[Sam Catch]

I am trying to add support for the SPI NOR device on the  Freescale
MCIMX6SLEVK Board.  I have created a patch that should enable support but
the probe command does not find the device.  The process fails during the
ECSPI transfer.

I have tried the following patch to the latest git master of u-boot:

http://pastebin.com/hamK7Ybb
U-Boot Output
=> sf probe
SF: Unsupported flash IDs: manuf 00, jedec 0000, ext_jedec 0000

Failed to initialize SPI flash at 0:27392