kernel-doc: remove fastcall

fastcall is gone from the tree, no need to adjust the function prototypes
anymore for this.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/kernel-doc

@@ -1624,7 +1624,6 @@ sub dump_function($$) {
 
     $prototype =~ s/^static +//;
     $prototype =~ s/^extern +//;
-    $prototype =~ s/^fastcall +//;
     $prototype =~ s/^asmlinkage +//;
     $prototype =~ s/^inline +//;
     $prototype =~ s/^__inline__ +//;