dts: arm: st: stm32u5: remove U suffix from "clocks" in DTSI

PR 79683 added unnecessary U suffix to constants in DTSI.
This bloats the files for no reason and is starting to spread as people
use the DTSI for reference in other places, and so copy this bad pattern.

Remove the useless U suffixes in DTSI files for this series.

Signed-off-by: Mathieu Choplain <[email protected]>

Author: Mathieu Choplain

dts/arm/st/u5/stm32u5.dtsi

@@ -476,7 +476,7 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x40015404 0x20>;
-			clocks = <&rcc STM32_CLOCK(APB2, 21U)>,
+			clocks = <&rcc STM32_CLOCK(APB2, 21)>,
 					 <&rcc STM32_SRC_PLL2_P SAI1_SEL(0)>;
 			dmas = <&gpdma1 1 36 (STM32_DMA_MODE_NORMAL | STM32_DMA_PRIORITY_HIGH |
 				STM32_DMA_16BITS)>;
@@ -488,7 +488,7 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x40015424 0x20>;
-			clocks = <&rcc STM32_CLOCK(APB2, 21U)>,
+			clocks = <&rcc STM32_CLOCK(APB2, 21)>,
 					 <&rcc STM32_SRC_PLL2_P SAI1_SEL(0)>;
 			dmas = <&gpdma1 0 37 (STM32_DMA_MODE_NORMAL | STM32_DMA_PRIORITY_HIGH |
 				STM32_DMA_16BITS)>;
@@ -725,9 +725,9 @@
 			reg = <0x420d2400 0x400>, <0x70000000 DT_SIZE_M(256)>;
 			interrupts = <120 0>;
 			clock-names = "ospix", "ospi-ker", "ospi-mgr";
-			clocks = <&rcc STM32_CLOCK(AHB2_2, 8U)>,
+			clocks = <&rcc STM32_CLOCK(AHB2_2, 8)>,
 				<&rcc STM32_SRC_SYSCLK OCTOSPI_SEL(0)>,
-				<&rcc STM32_CLOCK(AHB2, 21U)>;
+				<&rcc STM32_CLOCK(AHB2, 21)>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "disabled";