pinctrl: delete raw device pointers in pinmux maps

After discussion with Mark Brown in an unrelated thread about
ADC lookups, it came to my knowledge that the ability to pass
a struct device * in the regulator consumers is just a
historical artifact, and not really recommended. Since there
are no in-kernel users of these pointers, we just kill them
right now, before someone starts to use them.

Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/core.h b/drivers/pinctrl/core.h
index cfa86da..8a8b02e 100644
--- a/drivers/pinctrl/core.h
+++ b/drivers/pinctrl/core.h
@@ -72,8 +72,7 @@
 #endif
 };
 
-struct pinctrl_dev *get_pinctrl_dev_from_dev(struct device *dev,
-					     const char *dev_name);
+struct pinctrl_dev *get_pinctrl_dev_from_devname(const char *dev_name);
 struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, unsigned int pin);
 int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name);
 int pinctrl_get_device_gpio_range(unsigned gpio,