ASoC: cs42l42: Fix missing include of gpio/consumer.h

The call to gpiod_set_value_cansleep() in cs42l42_sdw_update_status()
needs the header file gpio/consumer.h to be included.

This was introduced by commit 2d066c6a78 ("ASoC: cs42l42: Avoid stale
SoundWire ATTACH after hard reset")

and caused error:
    sound/soc/codecs/cs42l42-sdw.c:374:4: error: implicit declaration of
    function ‘gpiod_set_value_cansleep’;
    did you mean gpio_set_value_cansleep’?

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 2d066c6a78 ("ASoC: cs42l42: Avoid stale SoundWire ATTACH after hard reset")
Link: https://lore.kernel.org/r/20231011134853.20059-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l42-sdw.c

@@ -6,6 +6,7 @@
 
 #include <linux/acpi.h>
 #include <linux/device.h>
+#include <linux/gpio/consumer.h>
 #include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>