cn0579: Add VIO values in README

Signed-off-by: Stanca Pop <stanca.pop@analog.com>

Author: StancaPop

projects/cn0579/README.md

@@ -3,6 +3,7 @@
 - Evaluation board product page: [EVAL-CN0579](https://www.analog.com/cn0579)
 - System documentation: https://wiki.analog.com/resources/eval/user-guides/circuits-from-the-lab/cn0579 
 - HDL project documentation: http://analogdevicesinc.github.io/hdl/projects/cn0579/index.html
+- Evaluation board VIO: 3.3V
 
 ## Supported parts
 
@@ -13,4 +14,4 @@
 
 ## 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/cn0579/coraz7s/README.md

@@ -1,10 +1,14 @@
+<!-- no_build_example, no_no_os -->
+
 # CN0579/CORAZ7S HDL Project
 
+- VIO with which it was tested in hardware: 3.3V
+
 ## Building the project
 
 ```
 cd projects/cn0579/coraz7s
 make
 ```
 
-Corresponding device tree: [zynq-coraz7s-cn0579_i2c.dts](https://github.com/analogdevicesinc/linux/blob/main/arch/arm/boot/dts/xilinx/zynq-coraz7s-cn0579_i2c.dts)
+Corresponding device tree: [zynq-coraz7s-cn0579_i2c.dts](https://github.com/analogdevicesinc/linux/blob/main/arch/arm/boot/dts/xilinx/zynq-coraz7s-cn0579_i2c.dts)

projects/cn0579/de10nano/README.md

@@ -1,10 +1,14 @@
+<!-- no_build_example, no_no_os -->
+
 # CN0579/DE10NANO HDL Project
 
+- VIO with which it was tested in hardware: 3.3V
+
 ## Building the project
 
 ```
 cd projects/cn0579/de10nano
 make
 ```
 
-Corresponding device tree: [socfpga_cyclone5_de10_nano_cn0579_i2c.dts](https://github.com/analogdevicesinc/linux/blob/main/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_de10_nano_cn0579_i2c.dts)
+Corresponding device tree: [socfpga_cyclone5_de10_nano_cn0579_i2c.dts](https://github.com/analogdevicesinc/linux/blob/main/arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_de10_nano_cn0579_i2c.dts)