board: nuvoton: arbel: change uboot load address

use new memory layout and change uboot load address.
open tpm, tee and more config feature

No need to reserve top memory because the reserved space
is moved to the bottom area of memory.

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
diff --git a/board/nuvoton/arbel_evb/Kconfig b/board/nuvoton/arbel_evb/Kconfig
index efe8597..33c589f 100644
--- a/board/nuvoton/arbel_evb/Kconfig
+++ b/board/nuvoton/arbel_evb/Kconfig
@@ -11,8 +11,8 @@
 
 config SYS_MEM_TOP_HIDE
 	hex "Reserved TOP memory"
-	default 0xB000000
+	default 0x0
 	help
-	  Reserve memory for ECC/GFX/VCD/ECE.
+	  Reserve memory for ECC/GFX/OPTEE/TIP/CP.
 
 endif