changes for IDS8247 board support

To get the IDS8247 board working following are done:
 - FCC2 is deactivated
 - FCC1 is activated
 - I2C is activated
 - CFI driver is activated
 - Adapted for use with LIBFDT

Signed-off-by: Sergej Stepanov <Sergej.Stepanov@ids.de>
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