Defines starting with `l' in machdep/ppc

• L2_CACHE_BACKSIDE machdep/ppc/powermac.h:105
• L2_CACHE_INLINE machdep/ppc/powermac.h:104
• L2_CACHE_MB machdep/ppc/powermac.h:103
• L2_CACHE_NONE machdep/ppc/powermac.h:102
• LINE machdep/ppc/serial_io.c:1454
• lt_b machdep/ppc/nkdefs.h:55