checkpatch: fix name of "MODULE_PARM_DESC"

Fix macro name in checkpatch: s/PARAM/PARM/.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>