[PATCH] chardev: GPIO for SCx200 & PC-8736x: add proper Kconfig, Makefile entries

Replace the temp makefile hacks with proper CONFIG entries, which are also
added to Kconfig.

Signed-off-by: Jim Cromie <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/char/Kconfig

···
 config SCx200_GPIO
 	tristate "NatSemi SCx200 GPIO Support"
 	depends on SCx200
+	select NSC_GPIO
 	help
 	  Give userspace access to the GPIO pins on the National
 	  Semiconductor SCx200 processors.
 
 	  If compiled as a module, it will be called scx200_gpio.
+
+config PC8736x_GPIO
+	tristate "NatSemi PC8736x GPIO Support"
+	depends on X86
+	default SCx200_GPIO	# mostly N
+	select NSC_GPIO		# needed for support routines
+	help
+	  Give userspace access to the GPIO pins on the National
+	  Semiconductor PC-8736x (x=[03456]) SuperIO chip.  The chip
+	  has multiple functional units, inc several managed by
+	  hwmon/pc87360 driver.  Tested with PC-87366
+
+	  If compiled as a module, it will be called pc8736x_gpio.
+
+config NSC_GPIO
+	tristate "NatSemi Base GPIO Support"
+	# selected by SCx200_GPIO and PC8736x_GPIO
+	# what about 2 selectors differing: m != y
+	help
+	  Common support used (and needed) by scx200_gpio and
+	  pc8736x_gpio drivers.  If those drivers are built as
+	  modules, this one will be too, named nsc_gpio
 
 config CS5535_GPIO
 	tristate "AMD CS5535/CS5536 GPIO (Geode Companion Device)"

drivers/char/Makefile

···
 obj-$(CONFIG_PPDEV)		+= ppdev.o
 obj-$(CONFIG_NWBUTTON)		+= nwbutton.o
 obj-$(CONFIG_NWFLASH)		+= nwflash.o
-obj-$(CONFIG_SCx200_GPIO)	+= scx200_gpio.o nsc_gpio.o pc8736x_gpio.o
+obj-$(CONFIG_SCx200_GPIO)	+= scx200_gpio.o
+obj-$(CONFIG_PC8736x_GPIO)	+= pc8736x_gpio.o
+obj-$(CONFIG_NSC_GPIO)		+= nsc_gpio.o
 obj-$(CONFIG_CS5535_GPIO)	+= cs5535_gpio.o
 obj-$(CONFIG_GPIO_VR41XX)	+= vr41xx_giu.o
 obj-$(CONFIG_TANBAC_TB0219)	+= tb0219.o