spi: Revert "spi/xilinx: Remove iowrite/ioread wrappers"

This reverts commit 99082eab63 since it
breaks the build due to differing implementations of iowrite() and
ioread().

Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Brown 2015-01-30 13:42:00 +01:00
commit 0635287a30