ipa: Fix create_version_clone_with_body declaration and comment

ipa: Fix create_version_clone_with_body declaration and comment

I noticed that the name of the fifth parameter of
cgraph_node::create_version_clone_with_body is different in the class
definition in cgraph.h and in the actual member function definition in
cgraphclones.cc.  The former (clone_name) is misleading and so this
patch changes it to the latter (suffix) which is also used in related
functions.

The patch also updates the function comment in both places because it
clearly became out of date.

gcc/ChangeLog:

2025-04-25  Martin Jambor  <mjambor@suse.cz>

	* cgraph.h (cgraph_node::create_version_clone_with_body): Fix function
	comment.  Change the name of clone_name to suffix, in line with the
	function definition.
	* cgraphclones.cc (cgraph_node::create_version_clone_with_body): Fix
	function comment.