boards/layout_opentitan.ld: Update memory addresses

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

boards/layout_opentitan.ld

diff --git a/boards/layout_opentitan.ld b/boards/layout_opentitan.ld
index 95b801d..bf15b4d 100644
--- a/boards/layout_opentitan.ld
+++ b/boards/layout_opentitan.ld
@@ -10,7 +10,7 @@
    * the kernel binary, check for the actual address of APP_MEMORY!
    */
   FLASH (rx) : ORIGIN = 0x20030040, LENGTH = 32M
-  SRAM (rwx) : ORIGIN = 0x10003000, LENGTH = 512K
+  SRAM (rwx) : ORIGIN = 0x10004000, LENGTH = 512K
 }
 
 /*