Update READMEs with VIO info for ad57xx_ardz

Author: mandrica

projects/ad57xx_ardz/README.md

@@ -6,6 +6,7 @@
    - [EVAL-AD5782-ARDZ](https://www.analog.com/eval-ad5782ardz)
 - System documentation: TO BE ADDED
 - HDL project documentation: https://analogdevicesinc.github.io/hdl/projects/ad57xx_ardz/index.html
+- Evaluation board VIO: 3.3V
 
 ## Supported parts
 
@@ -19,4 +20,4 @@
 
 ## Building the project
 
-Please enter the folder for the FPGA carrier you want to use and read the README.md.
+Please enter the folder for the FPGA carrier you want to use and read the README.md.

projects/ad57xx_ardz/coraz7s/README.md

@@ -1,8 +1,12 @@
+<!-- no_build_example, no_dts, no_no_os -->
+
 # AD57XX-ARDZ/CORAZ7S HDL Project
 
+- VIO with which it was tested in hardware: 3.3V
+
 ## Building the project
 
 ```
 cd projects/ad57xx_ardz/coraz7s
 make
-```
+```

projects/ad57xx_ardz/de10nano/README.md

@@ -1,10 +1,14 @@
+<!-- no_build_example, no_no_os -->
+
 # AD57XX-ARDZ/DE10NANO HDL Project
 
+- VIO with which it was tested in hardware: 3.3V
+
 ## Building the project
 
 ```
 cd projects/ad57xx_ardz/de10nano
 make
 ```
 
-Corresponding device tree: [socfpga_cyclone5_de10_nano_ad5791.dts](https://github.com/analogdevicesinc/linux/blob/main/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_de10_nano_ad5791.dts)
+Corresponding device tree: [socfpga_cyclone5_de10_nano_ad5791.dts](https://github.com/analogdevicesinc/linux/blob/main/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_de10_nano_ad5791.dts)