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

• SEEK_COMPLETE bsd/dev/ppc/drvPPCATA/ata_extern.h:159
• SEL_DRIVE0 bsd/dev/ppc/drvPPCATA/ata_extern.h:143
• SEL_DRIVE1 bsd/dev/ppc/drvPPCATA/ata_extern.h:144