ARM: dts: stm32: clean uart4_idle_pins_a node for stm32mp15

Clean useless spaces in uart4_idle_pins_a node.
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/stm32mp15-pinctrl.dtsi

@@ -1737,20 +1737,20 @@ pins2 {
 	};
 
 	uart4_idle_pins_a: uart4-idle-0 {
-		   pins1 {
-			 pinmux = <STM32_PINMUX('G', 11, ANALOG)>; /* UART4_TX */
-		   };
-		   pins2 {
-			 pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
-			 bias-disable;
-		   };
+		pins1 {
+			pinmux = <STM32_PINMUX('G', 11, ANALOG)>; /* UART4_TX */
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('B', 2, AF8)>; /* UART4_RX */
+			bias-disable;
+		};
 	};
 
 	uart4_sleep_pins_a: uart4-sleep-0 {
-		   pins {
+		pins {
 			pinmux = <STM32_PINMUX('G', 11, ANALOG)>, /* UART4_TX */
 				 <STM32_PINMUX('B', 2, ANALOG)>; /* UART4_RX */
-		    };
+		};
 	};
 
 	uart4_pins_b: uart4-1 {