doc: sphinx: refresh parse-headers.pl from Linux

Copy parse-headers.pl from Linux kernel tree:

* fix the parameter description %s/--man/--usage/
* fix a documentation reference

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/doc/sphinx/parse-headers.pl b/doc/sphinx/parse-headers.pl
index d4f38262eb5e9ff7f78a1f876095283c7e991d3f..c518050ffc3fb22b43a0d668028ea9b1d8444102 100755 (executable)
--- a/doc/sphinx/parse-headers.pl
+++ b/doc/sphinx/parse-headers.pl
@@ -344,7 +344,7 @@ enums and defines and create cross-references to a Sphinx book.
 
 B<parse_headers.pl> [<options>] <C_FILE> <OUT_FILE> [<EXCEPTIONS_FILE>]
 
-Where <options> can be: --debug, --help or --man.
+Where <options> can be: --debug, --help or --usage.
 
 =head1 OPTIONS
 
@@ -382,7 +382,7 @@ ioctl.
 The EXCEPTIONS_FILE contain two rules to allow ignoring a symbol or
 to replace the default references by a custom one.
 
-Please read doc/doc-guide/parse-headers.rst at the Kernel's
+Please read Documentation/doc-guide/parse-headers.rst at the Kernel's
 tree for more details.
 
 =head1 BUGS