ARM: tegra: add clock source of PMC to device trees

Adding the bindings of the clock source of PMC in DT.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 37701d8..8adaa35 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -417,6 +417,8 @@
 	pmc {
 		compatible = "nvidia,tegra20-pmc";
 		reg = <0x7000e400 0x400>;
+		clocks = <&tegra_car 110>, <&clk32k_in>;
+		clock-names = "pclk", "clk32k_in";
 	};
 
 	memory-controller@7000f000 {