qapi: Convert system_powerdown

Signed-off-by: Anthony Liguori <[email protected]>
Signed-off-by: Luiz Capitulino <[email protected]>
diff --git a/qmp.c b/qmp.c
index 51d9383..bf58b05 100644
--- a/qmp.c
+++ b/qmp.c
@@ -85,3 +85,8 @@
 {
     qemu_system_reset_request();
 }
+
+void qmp_system_powerdown(Error **erp)
+{
+    qemu_system_powerdown_request();
+}