ARM: shmobile: r8a73a4 PFC support

Add a platform device for the r8a73a4 PFC.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/Kconfig

@@ -20,6 +20,7 @@ config ARCH_SH73A0
 
 config ARCH_R8A73A4
 	bool "R-Mobile APE6 (R8A73A40)"
+	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select ARM_GIC
 	select CPU_V7
 	select ARM_ARCH_TIMER

arch/arm/mach-shmobile/include/mach/r8a73a4.h

@@ -3,5 +3,6 @@
 
 void r8a73a4_add_standard_devices(void);
 void r8a73a4_clock_init(void);
+void r8a73a4_pinmux_init(void);
 
 #endif /* __ASM_R8A73A4_H__ */

arch/arm/mach-shmobile/setup-r8a73a4.c

@@ -28,6 +28,16 @@
 #include <mach/r8a73a4.h>
 #include <asm/mach/arch.h>
 
+static const struct resource pfc_resources[] = {
+	DEFINE_RES_MEM(0xe6050000, 0x9000),
+};
+
+void __init r8a73a4_pinmux_init(void)
+{
+	platform_device_register_simple("pfc-r8a73a4", -1, pfc_resources,
+					ARRAY_SIZE(pfc_resources));
+}
+
 #define SCIF_COMMON(scif_type, baseaddr, irq)			\
 	.type		= scif_type,				\
 	.mapbase	= baseaddr,				\