remoteproc: imx_dsp_rproc: Correct the comment style of copyright

Change '//' on copyright line to C style comments.

Reported-by: Mathieu Poirier <[email protected]>
Signed-off-by: Shengjiu Wang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>

Author: TE-N-ShengjiuWang

drivers/remoteproc/imx_dsp_rproc.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-// Copyright 2021 NXP
+/* Copyright 2021 NXP */
 
 #include <dt-bindings/firmware/imx/rsrc.h>
 #include <linux/arm-smccc.h>