Use addition for offsetting, not masking. Shorten some lines.
Make "component_start" print-only (unused otherwise; don't save).
Still doesn't resolve the issue where multiple components
are wrongly displaying as NVICs on some Cortex-M3 parts because
many PIDs appear to be zeroes ... maybe adapter related??
Signed-off-by: David Brownell <db@helium.(none)>