arm: rmobile: kzm9g: enable reset command

Do soft power on reset in U-Boot reset command.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/kmc/kzm9g/kzm9g.c b/board/kmc/kzm9g/kzm9g.c
index 497f827..525c97a 100644
--- a/board/kmc/kzm9g/kzm9g.c
+++ b/board/kmc/kzm9g/kzm9g.c
@@ -372,4 +372,6 @@
 
 void reset_cpu(ulong addr)
 {
+	/* Soft Power On Reset */
+	writel((1 << 31), RESCNT2);
 }