fix(plat/mediatek/mt8186): extend MMU region size

In mt8186 suspend/resume flow, ATF has to communicate with a subsys by
read/write the subsys registers. However, the register region of subsys
doesn't include in the MMU mapping region. It triggers MMU faults.

This patch extends the MMU region 0 size to cover all mt8186 HW modules.
This patch also remove MMU region 1 because region 0 covers region 1.

TEST=build pass
BUG=b:202871018

Change-Id: I520c51338578bd68756cd02603ce6783f93daf51
diff --git a/plat/mediatek/mt8186/include/platform_def.h b/plat/mediatek/mt8186/include/platform_def.h
index bf26ead..5a56556 100644
--- a/plat/mediatek/mt8186/include/platform_def.h
+++ b/plat/mediatek/mt8186/include/platform_def.h
@@ -15,9 +15,7 @@
 
 /* Aggregate of all devices for MMU mapping */
 #define MTK_DEV_RNG0_BASE	IO_PHYS
-#define MTK_DEV_RNG0_SIZE	0x400000
-#define MTK_DEV_RNG1_BASE	(IO_PHYS + 0x1000000)
-#define MTK_DEV_RNG1_SIZE	0xa110000
+#define MTK_DEV_RNG0_SIZE	0x10000000
 #define MTK_DEV_RNG2_BASE	MT_GIC_BASE
 #define MTK_DEV_RNG2_SIZE	0x600000