Fix scan_usb() helper function
Fix install dependencies
Add support for easy-enum v0.2.0

• Add API for SRK Table and Fuses
• Add srkgen command into imxim tool
• Add support for Motorola S-Record (*.s19 or .srec) and Intel Hex (.ihex or *.hex) file formats into imxsd tool.
• Clean code and fix some issues