plat: imx8mp: change the bl31 physical load address

on i.MX8MP A1 silicon, the OCRAM space is extended to 512K + 64K,
currently, OCRAM @0x960000-0x980000 is reserved for BL31, it will
leave the last 64KB in non-continuous space. To provide a continuous
384KB + 64KB space for generic use, so move the BL31 space to
0x970000-0x990000 range.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I96d572fc0f87f05a60f55e0552a68b6e70f8e7f4

plat/imx/imx8m/imx8mp/include/platform_def.h

@@ -34,8 +34,8 @@
 #define PLAT_WAIT_RET_STATE		U(1)
 #define PLAT_STOP_OFF_STATE		U(3)
 
-#define BL31_BASE			U(0x960000)
-#define BL31_LIMIT			U(0x980000)
+#define BL31_BASE			U(0x970000)
+#define BL31_LIMIT			U(0x990000)
 
 /* non-secure uboot base */
 #define PLAT_NS_IMAGE_OFFSET		U(0x40200000)