[PATCH] ASoC: fsl: micfil: Use dual license micfil code

[Daniel Baluta <daniel.baluta@xxxxxxxxxxx>]

From: Daniel Baluta <daniel.baluta@xxxxxxx>

We need this in order to easily reuse register definitions
and some functions with Sound Open Firmware driver.

According to Documentation/process/license-rules.rst:
    "Dual BSD/GPL"	The module is dual licensed under a GPL v2
			variant or BSD license choice. The exact
			variant of the BSD license can only be
			determined via the license information
			in the corresponding source files.

so use "Dual BSD/GPL" for license string.

Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxx>
---
 sound/soc/fsl/fsl_micfil.c | 4 ++--
 sound/soc/fsl/fsl_micfil.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index fe28b27e50d0..97cf315781ab 100644
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 // Copyright 2018 NXP
 
 #include <linux/bitfield.h>
@@ -1254,4 +1254,4 @@ module_platform_driver(fsl_micfil_driver);
 
 MODULE_AUTHOR("Cosmin-Gabriel Samoila <cosmin.samoila@xxxxxxx>");
 MODULE_DESCRIPTION("NXP PDM Microphone Interface (MICFIL) driver");
-MODULE_LICENSE("GPL v2");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/sound/soc/fsl/fsl_micfil.h b/sound/soc/fsl/fsl_micfil.h
index 9237a1c4cb8f..fee9fe3d9119 100644
--- a/sound/soc/fsl/fsl_micfil.h
+++ b/sound/soc/fsl/fsl_micfil.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 */
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
  * PDM Microphone Interface for the NXP i.MX SoC
  * Copyright 2018 NXP
-- 
2.25.1