backport: spi_nand: ipq40xx: enable support for Fidelix SPI NAND

Note this is a backport from
https://source.codeaurora.org/quic/qsdk/oss/boot/u-boot-2016

3a8f8f7b4b15e0c84797fbeb772c6b77863ef6fe
spi_nand: ipq40xx: enable support for Fidelix SPI NAND

All errors and mistakes are likely mine and so I should be blamed
accordingly.

Change-Id: Ie23084307424c4d17b3d09389bde76e87df00b7c
2 files changed