ARM: dts: integratorap: Update spi node properties

As per spi pl022 binding, SPI clock name is "sspclk" and not "spiclk".
Fix it.

Also update ssp node name to enable spi bindings check.

Signed-off-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
Link: https://lore.kernel.org/r/20220312113853.63446-2-singh.kuldeep87k@gmail.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>