boards: st: nucleo_wb09ke: use STM32_CLOCK

This board was introduced concurrently with the STM32_CLOCK macro, so the
board's DTS uses the old method instead of the macro to specify clocks.

Update the DTS to use the STM32_CLOCK macro as other places do now.

Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>

boards/st/nucleo_wb09ke/nucleo_wb09ke.dts

@@ -151,7 +151,7 @@
 	pinctrl-names = "default";
 	status = "okay";
 	/* Select 64MHz clock for SPI3 */
-	clocks = <&rcc STM32_CLOCK_BUS_APB1 (1 << 14)>,
+	clocks = <&rcc STM32_CLOCK(APB1, 14)>,
 		<&rcc STM32_SRC_SYSCLK SPI3_I2S3_SEL(3)>;
 };