powerpc: Remove use of CONFIG_PPC_MERGE

Now that arch/ppc is gone and CONFIG_PPC_MERGE is always set, remove
the dead code associated with !CONFIG_PPC_MERGE from arch/powerpc
and include/asm-powerpc.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/include/asm/dcr.h b/arch/powerpc/include/asm/dcr.h
index 53b2830..d13fb68 100644
--- a/arch/powerpc/include/asm/dcr.h
+++ b/arch/powerpc/include/asm/dcr.h
@@ -65,17 +65,13 @@
 #endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */
 
 /*
- * On CONFIG_PPC_MERGE, we have additional helpers to read the DCR
- * base from the device-tree
+ * additional helpers to read the DCR * base from the device-tree
  */
-#ifdef CONFIG_PPC_MERGE
 struct device_node;
 extern unsigned int dcr_resource_start(struct device_node *np,
 				       unsigned int index);
 extern unsigned int dcr_resource_len(struct device_node *np,
 				     unsigned int index);
-#endif /* CONFIG_PPC_MERGE */
-
 #endif /* CONFIG_PPC_DCR */
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */