rockchip: px30: support px30

px30 is a Quad-core soc and Cortex-a53 inside.
This patch supports the following functions:
1. basic platform setup
2. power up/off cpus
3. suspend/resume cpus
4. suspend/resume system
5. reset system
6. power off system

Change-Id: I73d55aa978096c078242be921abe0ddca9e8f67e
Signed-off-by: XiaoDong Huang <derrick.huang@rock-chips.com>
diff --git a/plat/rockchip/px30/include/plat_sip_calls.h b/plat/rockchip/px30/include/plat_sip_calls.h
new file mode 100644
index 0000000..7b6a6a8
--- /dev/null
+++ b/plat/rockchip/px30/include/plat_sip_calls.h
@@ -0,0 +1,12 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __PLAT_SIP_CALLS_H__
+#define __PLAT_SIP_CALLS_H__
+
+#define RK_PLAT_SIP_NUM_CALLS	0
+
+#endif /* __PLAT_SIP_CALLS_H__ */