fix(rk3399/suspend): correct LPDDR4 resume sequence

This change adds 208 bytes to PMUSRAM, pushing the end of text from
0xff3b0de0 to 0xff3b0eb0, which is still shy of the maximum
0xff3b1000.

Further, this skips enabling the watchdog when it's not being used
elsewhere, as you can't turn the watchdog off.

Change-Id: I2e6fa3c7e01f2be6b32ce04ce479edf64e278554
Signed-off-by: Jimmy Brisson <jimmy.brisson@arm.com>
diff --git a/plat/rockchip/rk3399/drivers/dram/suspend.h b/plat/rockchip/rk3399/drivers/dram/suspend.h
index b99a926..1389944 100644
--- a/plat/rockchip/rk3399/drivers/dram/suspend.h
+++ b/plat/rockchip/rk3399/drivers/dram/suspend.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,6 +7,7 @@
 #ifndef SUSPEND_H
 #define SUSPEND_H
 
+#include <stdint.h>
 #include <dram.h>
 
 #define KHz (1000)
@@ -22,5 +23,6 @@
 
 void dmc_suspend(void);
 __pmusramfunc void dmc_resume(void);
+extern __pmusramdata uint8_t pmu_enable_watchdog0;
 
 #endif /* SUSPEND_H */