arm64: zynqmp: Add TTC clocks

PS clock(LPD_APB_CLK) is default clock for TTC. Add this clock
entry in TTC nodes.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynqmp-clk-ccf.dtsi

@@ -248,6 +248,22 @@
 	clocks = <&clkc 59>, <&clkc 31>;
 };
 
+&ttc0 {
+	clocks = <&clkc 31>;
+};
+
+&ttc1 {
+	clocks = <&clkc 31>;
+};
+
+&ttc2 {
+	clocks = <&clkc 31>;
+};
+
+&ttc3 {
+	clocks = <&clkc 31>;
+};
+
 &uart0 {
 	clocks = <&clkc 56>,  <&clkc 31>;
 };