kernel-doc: ignore unneeded attribute information

The kernel-doc script gets confused by __attribute__(()) strings in
structures, so just clean the out.  Also ignore the CRYPTO_MINALIGN_ATTR
macro used in the crypto subsystem.
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

scripts/kernel-doc

@@ -1799,7 +1799,9 @@ sub dump_struct($$) {
 	# strip kmemcheck_bitfield_{begin,end}.*;
 	$members =~ s/kmemcheck_bitfield_.*?;//gos;
 	# strip attributes
+	$members =~ s/__attribute__\s*\(\([a-z,_\*\s\(\)]*\)\)//i;
 	$members =~ s/__aligned\s*\([^;]*\)//gos;
+	$members =~ s/\s*CRYPTO_MINALIGN_ATTR//gos;
 
 	create_parameterlist($members, ';', $file);
 	check_sections($file, $declaration_name, "struct", $sectcheck, $struct_actual, $nested);