bindings: phy: stm32u5-otghs-phy: remove U suffix in DT snippets

After PR 79683, DTSI files were full of U-suffixed constants in the
clock configurations. This was copied verbatim in this file even
though the U prefix should not be used.

Remove the useless U suffixes in DT snippets of this binding.

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

Author: Mathieu Choplain

dts/bindings/phy/st,stm32u5-otghs-phy.yaml

@@ -22,19 +22,19 @@ properties:
       Supported configurations:
 
         /* HSE */
-        clocks = <&rcc STM32_CLOCK(AHB2, 15U)>,
+        clocks = <&rcc STM32_CLOCK(AHB2, 15)>,
                  <&rcc STM32_SRC_HSE OTGHS_SEL(0)>;
 
         /* HSE/2 */
-        clocks = <&rcc STM32_CLOCK(AHB2, 15U)>,
+        clocks = <&rcc STM32_CLOCK(AHB2, 15)>,
                  <&rcc (STM32_SRC_HSE | STM32_CLOCK_DIV(2)) OTGHS_SEL(2)>;
 
         /* PLL1_P_CK */
-        clocks = <&rcc STM32_CLOCK(AHB2, 15U)>,
+        clocks = <&rcc STM32_CLOCK(AHB2, 15)>,
                  <&rcc STM32_SRC_PLL1_P OTGHS_SEL(1)>;
 
         /* PLL1_P_CK/2 */
-        clocks = <&rcc STM32_CLOCK(AHB2, 15U)>,
+        clocks = <&rcc STM32_CLOCK(AHB2, 15)>,
                  <&rcc (STM32_SRC_PLL1_P | STM32_CLOCK_DIV(2)) OTGHS_SEL(3)>;
 
   clock-reference: