score: Delete Thread_Wait_information::Block2n

This field is no longer used.
powerpc: Use CPU_TIMESTAMP_USE_STRUCT_TIMESPEC

Converting 64-bit nanoseconds values into the common struct timeval or
struct timespec formats requires a 64-bit division to get the seconds
value.  Performance analysis of high network loads revealed that this is
too costly on PowerPC.
m68k: Use CPU_TIMESTAMP_USE_STRUCT_TIMESPEC

Converting 64-bit nanoseconds values into the common struct timeval or
struct timespec formats requires a 64-bit division to get the seconds
value.  Performance analysis of high network loads revealed that this is
too costly on PowerPC.
bsp/genmcf548x: Delete duplicate network config
bsp/genmcf548x: Use inline cache implementation