powerpc/p1022ds: Add RTC support

Add the RTC support into the p1022ds device tree
Signed-off-by: NJerry Huang <Chang-Ming.Huang@freescale.com>
Acked-by: NTimur Tabi <timur@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/p1022ds.dtsi

@@ -161,6 +161,10 @@
 			 * the clock is enabled.
 			 */
 		};
+		rtc@68 {
+			compatible = "dallas,ds1339";
+			reg = <0x68>;
+		};
 	};
 
 	spi@7000 {