Add crypto_deinit function for crypto_backend module

Bootloader needs to have a mechanism to de-initialize crypto, in case some HW accelerator
is being used. This adds the needed function for it

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>

platforms/nuttx/src/bootloader/common/bl.c

@@ -392,6 +392,10 @@ jump_to_app()
 
 #endif
 
+#ifdef BOOTLOADER_USE_SECURITY
+	crypto_deinit();
+#endif
+
 	/* just for paranoia's sake */
 	arch_flash_lock();