ARM: dts: sama5d2: reduce CAN0 message ram size

CAN0 current configuration only needs 0x1C00 bytes for its message ram.
Reduce the DT size for this memory as we don't have to ioremap more than
this.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>

Author: noglitch

arch/arm/boot/dts/sama5d2.dtsi

@@ -721,7 +721,7 @@
 
 			can0: can@f8054000 {
 				compatible = "bosch,m_can";
-				reg = <0xf8054000 0x4000>, <0x210000 0x4000>;
+				reg = <0xf8054000 0x4000>, <0x210000 0x2000>;
 				reg-names = "m_can", "message_ram";
 				interrupts = <56 IRQ_TYPE_LEVEL_HIGH 7>,
 					     <64 IRQ_TYPE_LEVEL_HIGH 7>;