Update README.md

Author: bryan-hunt

README.md

@@ -109,8 +109,8 @@ Host Device Support
 CryptoAuthLib will run on a variety of platforms from small micro-controllers
 to desktop host systems. See [hal readme](lib/hal/README.md)
 
-If you have specific microcontrollers or platforms you need support
-for, please contact us through the Microchip portal with your request.
+Porting requires a time delay function of millisecond resolution (hal_delay_ms) which
+can be implemented via loop, timer, or rtos sleep/wait and a communication interface.
 
 CryptoAuthLib Architecture
 ----------------------------