v1.2.2 to fix missing header file

### Releases v1.2.2

1. Use correct `PWM_Generic_Debug.h` file. Check [missing header #2](#2)
2. Display informational warning only when `_PWM_LOGLEVEL_` > 3
3. Update `Packages' Patches`

README.md

@@ -6,7 +6,8 @@
 [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](#Contributing)
 [![GitHub issues](https://img.shields.io/github/issues/khoih-prog/SAMD_Slow_PWM.svg)](http://github.com/khoih-prog/SAMD_Slow_PWM/issues)
 
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