board: ti: am43xx: Add FDT fixup for HS devices

Disable RNG and add TEE to FDT used on HS devices.

Signed-off-by: Andrew F. Davis <afd@ti.com>
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index 9603221..933596d 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -838,6 +838,15 @@
 }
 #endif
 
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	ft_cpu_setup(blob, bd);
+
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_SPL_LOAD_FIT
 int board_fit_config_name_match(const char *name)
 {
diff --git a/configs/am43xx_hs_evm_defconfig b/configs/am43xx_hs_evm_defconfig
index 0cb2ee9..4ad676f 100644
--- a/configs/am43xx_hs_evm_defconfig
+++ b/configs/am43xx_hs_evm_defconfig
@@ -11,6 +11,7 @@
 CONFIG_SPL_STACK_R_ADDR=0x82000000
 CONFIG_DEFAULT_DEVICE_TREE="am437x-gp-evm"
 CONFIG_FIT_IMAGE_POST_PROCESS=y
+CONFIG_OF_BOARD_SETUP=y
 CONFIG_SPL_LOAD_FIT=y
 CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y
 CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=1,NAND"