modpost: remove is_vmlinux() helper

Now that is_vmlinux() is called only in new_module(), we can inline
the function call.

modname is the basename with '.o' is stripped. No need to compare it
with 'vmlinux.o'.

vmlinux is always located at the current working directory. No need
to strip the directory path.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index ebfa9b7..a3ffabf 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -88,20 +88,6 @@
 	return strcmp(str + strlen(str) - strlen(postfix), postfix) == 0;
 }
 
-static int is_vmlinux(const char *modname)
-{
-	const char *myname;
-
-	myname = strrchr(modname, '/');
-	if (myname)
-		myname++;
-	else
-		myname = modname;
-
-	return (strcmp(myname, "vmlinux") == 0) ||
-	       (strcmp(myname, "vmlinux.o") == 0);
-}
-
 void *do_nofail(void *ptr, const char *expr)
 {
 	if (!ptr)
@@ -181,7 +167,7 @@
 
 	/* add to list */
 	strcpy(mod->name, modname);
-	mod->is_vmlinux = is_vmlinux(modname);
+	mod->is_vmlinux = (strcmp(modname, "vmlinux") == 0);
 	mod->gpl_compatible = -1;
 	mod->next = modules;
 	modules = mod;