ARM: dts: nomadik: Replace deprecated spi-gpio properties

As stated in Documentation/devicetree/bindings/spi/spi-gpio.yaml,
'gpio-mosi' and 'gpio-sck' are deprecated properties.

Use the recommeded 'mosi-gpios' and 'sck-gpios' instead.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Link: https://lore.kernel.org/r/20230407162504.1683422-1-festevam@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230410220300.2431524-1-linus.walleij@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: Fabio Estevam

arch/arm/boot/dts/ste-nomadik-nhk15.dts

@@ -210,8 +210,8 @@
 		 * As we're dealing with 3wire SPI, we only define SCK
 		 * and MOSI (in the spec MOSI is called "SDA").
 		 */
-		gpio-sck = <&gpio0 5 GPIO_ACTIVE_HIGH>;
-		gpio-mosi = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+		sck-gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
 		cs-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
 		num-chipselects = <1>;