nds32: Enable the function of passing parameters to Linux

Add a header file, setup.h, which copy from Linux source code,
this file contain structures are used to pass initialisation parameters
to Linux. Enable this function on adp-ag101/adp-ag101p target

Signed-off-by: Kuan-Yu Kuo <ken.kuoky@gmail.com>
Cc: Macpaul Lin <macpaul@gmail.com>
diff --git a/include/configs/adp-ag101p.h b/include/configs/adp-ag101p.h
index 6085208..8748134 100644
--- a/include/configs/adp-ag101p.h
+++ b/include/configs/adp-ag101p.h
@@ -35,6 +35,13 @@
 
 #define CONFIG_SKIP_LOWLEVEL_INIT
 
+/*
+ * Definitions related to passing arguments to kernel.
+ */
+#define CONFIG_CMDLINE_TAG			/* send commandline to Kernel */
+#define CONFIG_SETUP_MEMORY_TAGS	/* send memory definition to kernel */
+#define CONFIG_INITRD_TAG			/* send initrd params */
+
 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
 #define CONFIG_MEM_REMAP
 #endif