[binutils-gdb] Don't check object claimed by plugin

[sergiodj+buildbot at redhat dot com]

*** TEST RESULTS FOR COMMIT f0bf6bfd70fd550a0b01f8bef938a205702b0465 ***

Author: H.J. Lu <hjl.tools@gmail.com>
Branch: master
Commit: f0bf6bfd70fd550a0b01f8bef938a205702b0465

Don't check object claimed by plugin
When ELF linker backend searchs the symbol table of an archive element,
it should skip the object which has been claimed by plugin.

	PR ld/18250
	* elflink.c (elf_link_is_defined_archive_symbol): Return FALSE
	if the object has been claimed by plugin.