Clock: PllCalculator: added lpc11 to unittest
Clock: PllCalculator: Unittest: lpc11 pll input needs to be at least 10MHz
Clock: PllCalculator: Unittest: removed impossible lpc11 test cases

The LPC Pll Setup is not as flexible as thought.
Clock: LPC: added pll caluculator for lpc11xx
Clock: Common: Static: make pll template work with no extra frequencies
Clock: LPC: add static interface for lpc11xx
Example: lpcxpresso11c24: Blink: use static clock interface