scripts: kernel-doc: fix parsing function-like typedefs (again)

Typedefs like

    typedef struct phylink_pcs *(*pcs_xlate_t)(const u64 *args);

have a typedef_type that ends with a * and therefore has no word
boundary. Add an extra clause for the final group of the typedef_type so
we only require a word boundary if we match a word.

[mchehab: modify also kernel-doc.py, as we're deprecating the perl version]

Fixes: 7d2c6b1 ("scripts: kernel-doc: fix parsing function-like typedefs")
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/e0abb103c73a96d76602d909f60ab8fd6e2fd0bd.1744106242.git.mchehab+huawei@kernel.org

Author: Sean Anderson

scripts/kernel-doc.pl

@@ -1325,7 +1325,7 @@ ($$)
     }
 }
 
-my $typedef_type = qr { ((?:\s+[\w\*]+\b){1,8})\s* }x;
+my $typedef_type = qr { ((?:\s+[\w\*]+\b){0,7}\s+(?:\w+\b|\*+))\s* }x;
 my $typedef_ident = qr { \*?\s*(\w\S+)\s* }x;
 my $typedef_args = qr { \s*\((.*)\); }x;
 

scripts/lib/kdoc/kdoc_parser.py

@@ -1067,7 +1067,7 @@ def dump_typedef(self, ln, proto):
         Stores a typedef inside self.entries array.
         """
 
-        typedef_type = r'((?:\s+[\w\*]+\b){1,8})\s*'
+        typedef_type = r'((?:\s+[\w\*]+\b){0,7}\s+(?:\w+\b|\*+))\s*'
         typedef_ident = r'\*?\s*(\w\S+)\s*'
         typedef_args = r'\s*\((.*)\);'