arm64: zynqmp: Add 'silabs,skip-recall' to DDR DIMM si570 clk node

The 'silabs,skip-recall' property prevents interruption in operation of
the clock while the driver is being probed.  Without this property, the
DDR DIMM clk can cause a failure during Versal's boot.

Signed-off-by: Saeed Nowshadi <saeed.nowshadi@xilinx.com>

arch/arm/dts/zynqmp-e-a2197-00-revA.dts

@@ -2,7 +2,7 @@
 /*
  * dts file for Xilinx Versal a2197 RevA System Controller
  *
- * (C) Copyright 2019 - 2020, Xilinx, Inc.
+ * (C) Copyright 2019 - 2021, Xilinx, Inc.
  *
  * Michal Simek <michal.simek@xilinx.com>
  */
@@ -505,6 +505,7 @@
 				factory-fout = <200000000>;
 				clock-frequency = <200000000>;
 				clock-output-names = "si570_ddrdimm1_clk";
+				silabs,skip-recall;
 			};
 		};
 		i2c@4 { /* LPDDR4_SI570_CLK2 */