arm: rmobile: koelsch: Add external RAM boot

If CONFIG_RMOBILE_EXTRAM_BOOT is enabled, U-Boot is booted from External RAM.
The default boot address is 0x70000000.

Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/koelsch/qos.c b/board/renesas/koelsch/qos.c
index ecf3eed..d293e3d 100644
--- a/board/renesas/koelsch/qos.c
+++ b/board/renesas/koelsch/qos.c
@@ -14,7 +14,7 @@
 #include <asm/arch/rmobile.h>
 
 /* QoS version 0.240 for ES1 and version 0.334 for ES2 */
-
+#if defined(CONFIG_RMOBILE_EXTRAM_BOOT)
 enum {
 	DBSC3_00, DBSC3_01, DBSC3_02, DBSC3_03, DBSC3_04,
 	DBSC3_05, DBSC3_06, DBSC3_07, DBSC3_08, DBSC3_09,
@@ -1304,3 +1304,8 @@
 	writel(0x00000001, &axi_qos->qosthres2);
 	writel(0x00000001, &axi_qos->qosqon);
 }
+#else /* CONFIG_RMOBILE_EXTRAM_BOOT */
+void qos_init(void)
+{
+}
+#endif /* CONFIG_RMOBILE_EXTRAM_BOOT */