ASoC: wm_adsp: remove a repeated including

Remove a repeated "#include <linux/firmware.h>" in line 32.

Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
Acked-by: Simon Trimmer <simont@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210929123217.5240-1-guozhengkui@vivo.com


Signed-off-by: Mark Brown <broonie@kernel.org>