leds: simatic-ipc-leds-gpio: Introduce more Kconfig switches

To describe the dependency chain better and allow for potential
fine-grained config tuning, introduce Kconfig switch for the individual
GPIO based drivers.
Signed-off-by: Henning Schild <henning.schild@siemens.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230524124628.32295-5-henning.schild@siemens.com

drivers/leds/simple/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config LEDS_SIEMENS_SIMATIC_IPC
 	tristate "LED driver for Siemens Simatic IPCs"
-	depends on LEDS_GPIO
 	depends on SIEMENS_SIMATIC_IPC
 	help
 	  This option enables support for the LEDs of several Industrial PCs
 	  from Siemens.
 
-	  To compile this driver as a module, choose M here: the modules
-	  will be called simatic-ipc-leds and simatic-ipc-leds-gpio.
+	  To compile this driver as a module, choose M here: the module
+	  will be called simatic-ipc-leds.
+
+config LEDS_SIEMENS_SIMATIC_IPC_APOLLOLAKE
+	tristate "LED driver for Siemens Simatic IPCs based on Intel Apollo Lake GPIO"
+	depends on LEDS_GPIO
+	depends on PINCTRL_BROXTON
+	depends on SIEMENS_SIMATIC_IPC
+	default LEDS_SIEMENS_SIMATIC_IPC
+	help
+	  This option enables support for the LEDs of several Industrial PCs
+	  from Siemens based on Apollo Lake GPIO i.e. IPC127E.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called simatic-ipc-leds-gpio-apollolake.
+
+config LEDS_SIEMENS_SIMATIC_IPC_F7188X
+	tristate "LED driver for Siemens Simatic IPCs based on Nuvoton GPIO"
+	depends on LEDS_GPIO
+	depends on GPIO_F7188X
+	depends on SIEMENS_SIMATIC_IPC
+	default LEDS_SIEMENS_SIMATIC_IPC
+	help
+	  This option enables support for the LEDs of several Industrial PCs
+	  from Siemens based on Nuvoton GPIO i.e. IPC227G.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called simatic-ipc-leds-gpio-f7188x.

drivers/leds/simple/Makefile

 # SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC)	+= simatic-ipc-leds.o
-obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC)  += simatic-ipc-leds-gpio-core.o
-obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC)	+= simatic-ipc-leds-gpio-apollolake.o
-obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC)	+= simatic-ipc-leds-gpio-f7188x.o
+obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC)			+= simatic-ipc-leds.o
+obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC_APOLLOLAKE)	+= simatic-ipc-leds-gpio-core.o simatic-ipc-leds-gpio-apollolake.o
+obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC_F7188X)		+= simatic-ipc-leds-gpio-core.o simatic-ipc-leds-gpio-f7188x.o