ARM: SAMSUNG: i2c/busses: Add HAVE_S3C2410_I2C option to include I2C for Samsung SoCs

This patch adds HAVE_S3C2410_I2C to control inclusion of I2C bus driver
on Samsung SoCs and makes I2C bus driver dependency SoC specific instead
of machine specific. This will enalbe all machines using Samsung ARCH_S3C2410,
_S3C64XX, _S5P6440, _S5PC100, and _S5PV210 to select the I2C driver by default

Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>

arch/arm/Kconfig

@@ -634,6 +634,7 @@ config ARCH_S3C2410
 	select ARCH_HAS_CPUFREQ
 	select HAVE_CLK
 	select ARCH_USES_GETTIMEOFFSET
+	select HAVE_S3C2410_I2C
 	help
 	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
 	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
@@ -663,6 +664,7 @@ config ARCH_S3C64XX
 	select S3C_DEV_NAND
 	select USB_ARCH_HAS_OHCI
 	select SAMSUNG_GPIOLIB_4BIT
+	select HAVE_S3C2410_I2C
 	help
 	  Samsung S3C64XX series based systems
 
@@ -672,6 +674,7 @@ config ARCH_S5P6440
 	select GENERIC_GPIO
 	select HAVE_CLK
 	select ARCH_USES_GETTIMEOFFSET
+	select HAVE_S3C2410_I2C
 	select HAVE_S3C_RTC
 	help
 	  Samsung S5P6440 CPU based systems
@@ -692,6 +695,7 @@ config ARCH_S5PC100
 	select CPU_V7
 	select ARM_L1_CACHE_SHIFT_6
 	select ARCH_USES_GETTIMEOFFSET
+	select HAVE_S3C2410_I2C
 	select HAVE_S3C_RTC
 	help
 	  Samsung S5PC100 series based systems
@@ -703,6 +707,7 @@ config ARCH_S5PV210
 	select HAVE_CLK
 	select ARM_L1_CACHE_SHIFT_6
 	select ARCH_USES_GETTIMEOFFSET
+	select HAVE_S3C2410_I2C
 	select HAVE_S3C_RTC
 	help
 	  Samsung S5PV210/S5PC110 series based systems

drivers/i2c/busses/Kconfig

@@ -521,12 +521,19 @@ config I2C_PXA_SLAVE
 	  is necessary for systems where the PXA may be a target on the
 	  I2C bus.
 
+config HAVE_S3C2410_I2C
+	bool
+	help
+	  This will include I2C support for Samsung SoCs. If you want to
+	  include I2C support for any machine, kindly select this in the
+	  respective Kconfig file.
+
 config I2C_S3C2410
 	tristate "S3C2410 I2C Driver"
-	depends on ARCH_S3C2410 || ARCH_S3C64XX
+	depends on HAVE_S3C2410_I2C
 	help
 	  Say Y here to include support for I2C controller in the
-	  Samsung S3C2410 based System-on-Chip devices.
+	  Samsung SoCs.
 
 config I2C_S6000
 	tristate "S6000 I2C support"