powerpc/t4rdb: Add support of CPLD

This support of CPLD includes

    - Files and register definitions
    - Command to switch alternate bank
    - Command to switch default bank

Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/t4rdb/law.c b/board/freescale/t4rdb/law.c
index 1f58768..39818fc 100644
--- a/board/freescale/t4rdb/law.c
+++ b/board/freescale/t4rdb/law.c
@@ -16,6 +16,9 @@
 #ifdef CONFIG_SYS_QMAN_MEM_PHYS
 	SET_LAW(CONFIG_SYS_QMAN_MEM_PHYS, LAW_SIZE_32M, LAW_TRGT_IF_QMAN),
 #endif
+#ifdef CONFIG_SYS_CPLD_BASE_PHYS
+	SET_LAW(CONFIG_SYS_CPLD_BASE_PHYS, LAW_SIZE_4K, LAW_TRGT_IF_IFC),
+#endif
 #ifdef CONFIG_SYS_DCSRBAR_PHYS
 	/* Limit DCSR to 32M to access NPC Trace Buffer */
 	SET_LAW(CONFIG_SYS_DCSRBAR_PHYS, LAW_SIZE_32M, LAW_TRGT_IF_DCSR),