The patch allows to specify that an SPI device needs an active high chip
select.
Signed-off-by: NWolfgang Ocker <weo@reccoware.de>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

This patch adds support for populating an SPI bus based on data in the
OF device tree.  This is useful for powerpc platforms which use the
device tree instead of discrete code for describing platform layout.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>