Added necessary packages to build stmhal on Fedora.

Getting-Started.md

@@ -177,4 +177,8 @@ Discussion on design https://forum.pjrc.com/threads/24794-MicroPython-for-Teensy
 
 > cd ../minimal
 
-> make - FAILS
+> make - FAILS
+
+### Fedora
+
+Install packages arm-none-eabi-gcc, arm-none-eabi-binutils and arm-none-eabi-newlib to be able to build stmhal port.