Revert "ARM: dts: nomadik: Fix polarity of SPI CS"

Revert "ARM: dts: nomadik: Fix polarity of SPI CS"

This reverts commit d6fc8e050f61a8898a680d5212b2f779ab28656a.

Per Linus Walleij:

Dear ARM SoC maintainers,

can you please revert this patch. It was the wrong solution to the
wrong problem, and I must have acted in stress. Andrey fixed the
real bug in a proper way in these commits:

commit dd76b1e5818ab14e969e8923a4d7cf7b53e2ca79
"gpio: of: Check propname before applying "cs-gpios" quirks"
commit 9a51152202079de921223ddbc09c3e2bf1aed032
"gpio: of: Check for "spi-cs-high" in child instead of parent node"

Signed-off-by: Olof Johansson <olof@lixom.net>