dts: arm: nxp_mcxn94x: fix support for NS mode

Fix build error for MCXN94X devicetree for nonsecure mode

Signed-off-by: Daniel DeGrasse <[email protected]>

Author: danieldegrasse

dts/arm/nxp/nxp_mcxn94x_ns.dtsi

@@ -4,6 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+#include <mem.h>
+#include <arm/armv8-m.dtsi>
+
 / {
 	soc {
 		sram: sram@4000000 {