Defines starting with `a' in osfmk/ppc/POWERMAC

• ATTR_BOLD osfmk/ppc/POWERMAC/video_console.c:118
• ATTR_NONE osfmk/ppc/POWERMAC/video_console.c:117
• ATTR_REVERSE osfmk/ppc/POWERMAC/video_console.c:120
• ATTR_UNDER osfmk/ppc/POWERMAC/video_console.c:119