ARM: dts: at91: sama5d3_uart: fix reg sizes to match documentation

The new size (0x100) also matches the size given in sama5d3.dtsi

Documentation reference: section 43.6 "Universal Asynchronous
Receiver Transmitter (UART) User Interface", table 43-4 "Register
Mapping" in [1].

[1] Atmel-11121F-ATARM-SAMA5D3-Series-Datasheet_02-Feb-16
Signed-off-by: NPeter Rosin <peda@axentia.se>
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>

arch/arm/boot/dts/sama5d3_uart.dtsi

@@ -55,7 +55,7 @@
 
 			uart0: serial@f0024000 {
 				compatible = "atmel,at91sam9260-usart";
-				reg = <0xf0024000 0x200>;
+				reg = <0xf0024000 0x100>;
 				interrupts = <16 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_uart0>;
@@ -66,7 +66,7 @@
 
 			uart1: serial@f8028000 {
 				compatible = "atmel,at91sam9260-usart";
-				reg = <0xf8028000 0x200>;
+				reg = <0xf8028000 0x100>;
 				interrupts = <17 IRQ_TYPE_LEVEL_HIGH 5>;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_uart1>;