ASoC: q6afe-clocks: Fix typo in SPDX Licence

Looks like there was a major typo in SPDX Licence version,
Not sure how it was missed.
This patch is to fix it.
Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200926171844.7792-1-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/qdsp6/q6afe-clocks.c

-// SPDX-License-Identifier: GPL-1.0
+// SPDX-License-Identifier: GPL-2.0
 // Copyright (c) 2020, Linaro Limited
 
 #include <linux/err.h>