Example MPC5777C Progresive clock switching GHS716

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* Detailed Description:
* This exapmple demonstrates progressive clock switching from full PLL clock
* 256MNHz down to 200MHz.
*
* ---------------------------------------------------------------------------------------------
* Test HW:  MPC57xx
* Maskset:  3N45H
* Target :  FLASH
* Fsys:     256 MHz PLL
*
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Revision History:
1.0     Aug-04-2016     b21190(Vlna Peter)  Initial Version
1.1    Sep-05-2017     b21190(Vlna Peter)  Added FCCU faults clearing
1.2    May-07-2018    nxa13250(Vlna Peter)  PLL switch from 256->200MHz
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