pinctrl: remove coh901 driver

The ST-Ericsson U300 platform is getting removed, so this driver is no
longer needed.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210120132045.2127659-5-arnd@kernel.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt

-ST-Ericsson COH 901 571/3 GPIO controller
-
-Required properties:
-- compatible: Compatible property value should be "stericsson,gpio-coh901"
-- reg: Physical base address of the controller and length of memory mapped
-  region.
-- interrupts: the 0...n interrupts assigned to the different GPIO ports/banks.

drivers/pinctrl/Kconfig

@@ -277,16 +277,6 @@ config PINCTRL_U300
 	select PINMUX
 	select GENERIC_PINCONF
 
-config PINCTRL_COH901
-	bool "ST-Ericsson U300 COH 901 335/571 GPIO"
-	depends on GPIOLIB && ARCH_U300 && PINCTRL_U300
-	select GPIOLIB_IRQCHIP
-	help
-	  Say yes here to support GPIO interface on ST-Ericsson U300.
-	  The names of the two IP block variants supported are
-	  COH 901 335 and COH 901 571/3. They contain 3, 5 or 7
-	  ports of 8 GPIO pins each.
-
 config PINCTRL_MAX77620
 	tristate "MAX77620/MAX20024 Pincontrol support"
 	depends on MFD_MAX77620 && OF

drivers/pinctrl/Makefile

@@ -34,7 +34,6 @@ obj-$(CONFIG_PINCTRL_SINGLE)	+= pinctrl-single.o
 obj-$(CONFIG_PINCTRL_SX150X)	+= pinctrl-sx150x.o
 obj-$(CONFIG_ARCH_TEGRA)	+= tegra/
 obj-$(CONFIG_PINCTRL_U300)	+= pinctrl-u300.o
-obj-$(CONFIG_PINCTRL_COH901)	+= pinctrl-coh901.o
 obj-$(CONFIG_PINCTRL_XWAY)	+= pinctrl-xway.o
 obj-$(CONFIG_PINCTRL_LANTIQ)	+= pinctrl-lantiq.o
 obj-$(CONFIG_PINCTRL_LPC18XX)	+= pinctrl-lpc18xx.o

drivers/pinctrl/pinctrl-coh901.h

-/* SPDX-License-Identifier: GPL-2.0 */
-int u300_gpio_config_get(struct gpio_chip *chip,
-			 unsigned offset,
-			 unsigned long *config);
-int u300_gpio_config_set(struct gpio_chip *chip, unsigned offset,
-			 enum pin_config_param param);