ARM: dts: stm32: use RCC macro for CRC node on stm32f746

commit 7a5f349e592c254f3c1ac34665b6c3905576efc2 Linux upstream.

The patch replaces the number 12 with the appropriate numerical constant
already defined in the file stm32f7-rcc.h.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/arch/arm/dts/stm32f746.dtsi b/arch/arm/dts/stm32f746.dtsi
index dc5c257..7b4bd80 100644
--- a/arch/arm/dts/stm32f746.dtsi
+++ b/arch/arm/dts/stm32f746.dtsi
@@ -526,7 +526,7 @@
 		crc: crc@40023000 {
 			compatible = "st,stm32f7-crc";
 			reg = <0x40023000 0x400>;
-			clocks = <&rcc 0 12>;
+			clocks = <&rcc 0 STM32F7_AHB1_CLOCK(CRC)>;
 			status = "disabled";
 		};