gpio: regmap: Add missing header(s)

Do not imply that some of the generic headers may be always included.
Instead, include explicitly what we are direct user of.

While at it, split out the GPIO group of headers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c
index fca17d478984e9f0ef758afecf60d135d7c01556..c08c8e528867eef7b3f6670fbdb4f95963bed5d2 100644 (file)
--- a/drivers/gpio/gpio-regmap.c
+++ b/drivers/gpio/gpio-regmap.c
@@ -5,11 +5,17 @@
  * Copyright 2020 Michael Walle <michael@walle.cc>
  */
 
-#include <linux/gpio/driver.h>
-#include <linux/gpio/regmap.h>
-#include <linux/kernel.h>
+#include <linux/bits.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <linux/gpio/driver.h>
+#include <linux/gpio/regmap.h>
 
 struct gpio_regmap {
        struct device *parent;