Defines starting with `b' in osfmk/kdp/pe/POWERMAC

• BFRSIZ osfmk/kdp/pe/POWERMAC/kdp_mace.h:345
• BIUCC_BSWP osfmk/kdp/pe/POWERMAC/kdp_mace.h:277
• BIUCC_SWRST osfmk/kdp/pe/POWERMAC/kdp_mace.h:282
• BIUCC_XMTSP04 osfmk/kdp/pe/POWERMAC/kdp_mace.h:278
• BIUCC_XMTSP112 osfmk/kdp/pe/POWERMAC/kdp_mace.h:281
• BIUCC_XMTSP16 osfmk/kdp/pe/POWERMAC/kdp_mace.h:279
• BIUCC_XMTSP64 osfmk/kdp/pe/POWERMAC/kdp_mace.h:280