scripts/spdxcheck: Add count of missing files to stats output

Add a count of files missing an SPDX header to the stats
output. This is useful detailed information for working
on SPDX header additions.

Signed-off-by: Tim Bird <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

scripts/spdxcheck.py

···
                 if parser.checked:
                     pc = int(100 * parser.spdx_valid / parser.checked)
                     sys.stderr.write('Files with SPDX:   %12d %3d%%\n' %(parser.spdx_valid, pc))
+                    missing = parser.checked - parser.spdx_valid
+                    mpc = int(100 * missing / parser.checked)
+                    sys.stderr.write('Files without SPDX:%12d %3d%%\n' %(missing, mpc))
                 sys.stderr.write('Files with errors: %12d\n' %parser.spdx_errors)
                 if ndirs:
                     sys.stderr.write('\n')