ARM: at91/dt: tny_a9263: define crystals frequencies

Define Calao TNY-A9263 main and slow crystals frequencies.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/boot/dts/tny_a9263.dts b/arch/arm/boot/dts/tny_a9263.dts
index 0751a6a..3043296 100644
--- a/arch/arm/boot/dts/tny_a9263.dts
+++ b/arch/arm/boot/dts/tny_a9263.dts
@@ -29,6 +29,14 @@
 			compatible = "atmel,osc", "fixed-clock";
 			clock-frequency = <12000000>;
 		};
+
+		slow_xtal {
+			clock-frequency = <32768>;
+		};
+
+		main_xtal {
+			clock-frequency = <12000000>;
+		};
 	};
 
 	ahb {