[ARM] S3C: Add GPIO chip tracking

The gpiolib driver keeps its chip array to itself
and having a separate array for s3c-only gpios stops
any non-s3c gpio being used in one of the s3c specific
configuration calls.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
index d7767e0..77fc38f 100644
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -114,6 +114,12 @@
 	  one bank to another to be caught, at the expense of using a little
 	  more memory.
 
+config S3C_GPIO_TRACK
+	bool
+	help
+	  Internal configuration option to enable the s3c specific gpio
+	  chip tracking if the platform requires it.
+
 # device definitions to compile in
 
 config S3C_DEV_HSMMC