[PATCH/RFC] ARM: shmobile: Disallow PINCTRL without GPIOLIB

[Magnus Damm]

From: Magnus Damm <damm at opensource.se>

Modify mach-shmobile to only select PINCTRL in case of
ARCH_WANT_OPTIONAL_GPIOLIB is set.

This fixes a build error triggered when adding a new SoC
lacking GPIO software support (ARCH_WANT_OPTIONAL_GPIOLIB=n):

 CC      drivers/tty/vt/keyboard.o
In file included from drivers/pinctrl/core.c:30:0:
include/asm-generic/gpio.h: In function 'gpio_get_value_cansleep':
include/asm-generic/gpio.h:270:2: error: implicit declaration of function '__gpio_get_value'
include/asm-generic/gpio.h: In function 'gpio_set_value_cansleep':
include/asm-generic/gpio.h:276:2: error: implicit declaration of function '__gpio_set_value'
drivers/pinctrl/core.c: In function 'pinctrl_ready_for_gpio_range':
drivers/pinctrl/core.c:297:9: error: implicit declaration of function 'gpio_to_chip'
drivers/pinctrl/core.c:297:27: warning: initialization makes pointer from integer without a cast
drivers/pinctrl/core.c:304:45: error: dereferencing pointer to incomplete type
drivers/pinctrl/core.c:305:26: error: dereferencing pointer to incomplete type
drivers/pinctrl/core.c:305:39: error: dereferencing pointer to incomplete type
make[2]: *** [drivers/pinctrl/core.o] Error 1
make[1]: *** [drivers/pinctrl] Error 2
make[1]: *** Waiting for unfinished jobs....
  LD      drivers/sh/built-in.o

Signed-off-by: Magnus Damm <damm at opensource.se>
---

 Using renesas.git "next" 811689afc214564c4a5f238ecf4d8bdc0e52b615

 Trigger using the r8a73a4 patches that lack GPIO and PFC support.

 I am more than happy to replace this patch with something cleaner.

 arch/arm/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 0001/arch/arm/Kconfig
+++ work/arch/arm/Kconfig	2013-03-18 14:56:17.000000000 +0900
@@ -725,7 +725,7 @@ config ARCH_SHMOBILE
 	select MULTI_IRQ_HANDLER
 	select NEED_MACH_MEMORY_H
 	select NO_IOPORT
-	select PINCTRL
+	select PINCTRL if ARCH_WANT_OPTIONAL_GPIOLIB
 	select PM_GENERIC_DOMAINS if PM
 	select SPARSE_IRQ
 	help