arm64: zynqmp: Use revision in dts file description

Trivial change.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/dts/zynqmp-zcu102-revA.dts b/arch/arm/dts/zynqmp-zcu102-revA.dts
index d8ac008..581ecd7 100644
--- a/arch/arm/dts/zynqmp-zcu102-revA.dts
+++ b/arch/arm/dts/zynqmp-zcu102-revA.dts
@@ -1,5 +1,5 @@
 /*
- * dts file for Xilinx ZynqMP ZCU102
+ * dts file for Xilinx ZynqMP ZCU102 RevA
  *
  * (C) Copyright 2015, Xilinx, Inc.
  *