Defines starting with `f' in bsd/dev/ppc/drvPPCATA

• FEATURE_DISABLE_POWER_ON_DEFAULTS bsd/dev/ppc/drvPPCATA/ata_extern.h:393
• FEATURE_ENABLE_POWER_ON_DEFAULTS bsd/dev/ppc/drvPPCATA/ata_extern.h:392
• FEATURE_SET_TRANSFER_MODE bsd/dev/ppc/drvPPCATA/ata_extern.h:391