mfd: madera: Don't use "proxy" headers

Update header inclusions to follow IWYU (Include What You Use)
principle.

Note that kernel.h is discouraged to be included as it's written
at the top of that file.

Signed-off-by: Andy Shevchenko <[email protected]>
Reviewed-by: Charles Keepax <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: andy-shev

include/linux/mfd/madera/pdata.h

@@ -8,10 +8,11 @@
 #ifndef MADERA_PDATA_H
 #define MADERA_PDATA_H
 
-#include <linux/kernel.h>
 #include <linux/regulator/arizona-ldo1.h>
 #include <linux/regulator/arizona-micsupp.h>
 #include <linux/regulator/machine.h>
+#include <linux/types.h>
+
 #include <sound/madera-pdata.h>
 
 #define MADERA_MAX_MICBIAS		4