benchmark.h requires a definition of KS_LOG_PPTR, but its previous
placement in machine.h resulted in a circular include. This commit
factors out KS_LOG_PPTR and related definitions to a separate header,
creates the corresponding header for x86, and prevents circular
includes in the x86 builds
benchmark_track.h does not depend upon anything in debug.h and
so it does not need to include it. Once this include is removed
debug.h can pull its definition of ksKernelEntry from benchmark_track.h
The lowest syscall number is -8, which doesnt' fit in 3 bits -> change
to 4.
Also, we were storing the -ve number, which also doesn't fit into 3
bits -> invert it when we store it.
