board: ti: am43xx: Add TEE loading and firewall setup

Add support for loading a TEE and setting up firewalled regions to
AM43xx HS boards.

Signed-off-by: Andrew F. Davis <afd@ti.com>
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index 54f40e6..9603221 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -859,4 +859,11 @@
 {
 	secure_boot_verify_image(p_image, p_size);
 }
+
+void board_tee_image_process(ulong tee_image, size_t tee_size)
+{
+	secure_tee_install((u32)tee_image);
+}
+
+U_BOOT_FIT_LOADABLE_HANDLER(IH_TYPE_TEE, board_tee_image_process);
 #endif