sh: fix up the dwarf unwinder build for MODULES=n.

Presently the dwarf unwinder build blows up if modules are disabled,
fix it up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/dwarf.c

@@ -845,8 +845,10 @@ static int dwarf_parse_cie(void *entry, void *p, unsigned long len,
 	rb_link_node(&cie->node, parent, rb_node);
 	rb_insert_color(&cie->node, &cie_root);
 
+#ifdef CONFIG_MODULES
 	if (mod != NULL)
 		list_add_tail(&cie->link, &mod->arch.cie_list);
+#endif
 
 	spin_unlock_irqrestore(&dwarf_cie_lock, flags);
 
@@ -935,8 +937,10 @@ static int dwarf_parse_fde(void *entry, u32 entry_type,
 	rb_link_node(&fde->node, parent, rb_node);
 	rb_insert_color(&fde->node, &fde_root);
 
+#ifdef CONFIG_MODULES
 	if (mod != NULL)
 		list_add_tail(&fde->link, &mod->arch.fde_list);
+#endif
 
 	spin_unlock_irqrestore(&dwarf_fde_lock, flags);