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

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

This reverts commit 2c156e033856bf182d8fa0be1881a8643fa20909.

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 0c7a2c6b93b2bacb5ba13443f4048dc50bba1d21
"gpio: of: Check propname before applying "cs-gpios" quirks"
commit 5f66b74d1a411a5545b04d9a3046cb7f310b580c
"gpio: of: Check for "spi-cs-high" in child instead of parent node"

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