ARM: SAMSUNG: Move IRQ UART handling for newer devices to plat-samsung

Move the handling for the UART interrupts out of the s3c64xx specific
code and into plat-samsung so that it can be used by all implementations
that need it.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index cedecd8..900b463 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -26,6 +26,11 @@
        help
          Internal configuration to build the VIC timer interrupt code.
 
+config SAMSUNG_IRQ_UART
+       bool
+       help
+         Internal configuration to build the IRQ UART demux code.
+
 # options for gpio configuration support
 
 config S3C_GPIO_CFG_S3C24XX