[nrf fromtree] ext/nrf/cc310_glue.h: Update Zephyr include path

Add `zephyr/` prefix to `<devicetree.h>`.

Signed-off-by: Andrzej Głąbek <[email protected]>
(cherry picked from commit 14e45ce)

Author: anangl

ext/nrf/cc310_glue.h

@@ -10,7 +10,7 @@
 #include <nrf_cc310_bl_init.h>
 #include <nrf_cc310_bl_hash_sha256.h>
 #include <nrf_cc310_bl_ecdsa_verify_secp256r1.h>
-#include <devicetree.h>
+#include <zephyr/devicetree.h>
 #include <string.h>
 
 /*