ld: Set the is_linker_input field

Set the is_linker_input field when adding object only section.

	* ldlang.c (cmdline_add_object_only_section): Set the
	is_linker_input field.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

ld/ldlang.c

diff --git a/ld/ldlang.c b/ld/ldlang.c
index 2e6d010..048c848 100644
--- a/ld/ldlang.c
+++ b/ld/ldlang.c
@@ -10713,6 +10713,9 @@
       goto loser;
     }
 
+  /* This is a linker input BFD.  */
+  ibfd->is_linker_input = 1;
+
   if (!bfd_check_format_matches (ibfd, bfd_object, &matching))
     {
       err = bfd_errmsg (bfd_get_error ());