arm64: dts: ns2: Fix spi-cpol and spi-cpha property

arm64: dts: ns2: Fix spi-cpol and spi-cpha property

BugLink: https://bugs.launchpad.net/bugs/1969110
[ Upstream commit c953c764e505428f59ffe6afb1c73b89b5b1ac35 ]

Broadcom ns2 platform has spi-cpol and spi-cpho properties set
incorrectly. As per spi-slave-peripheral-prop.yaml, these properties are
of flag or boolean type and not integer type. Fix the values.

Fixes: d69dbd9f41a7c (arm64: dts: Add ARM PL022 SPI DT nodes for NS2)
Signed-off-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
CC: Ray Jui <rjui@broadcom.com>
CC: Scott Branden <sbranden@broadcom.com>
CC: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit de64846df9fefaae5acc4e2a090eba9973a9e1a1)
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>