SC26XX: New serial driver for SC2681 uarts

New serial driver for SC2681/SC2691 uarts.  Older SNI RM400 machines are
using these chips for onboard serial ports.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Torben Mathiasen <device@lanana.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 43fbba4..6a44fb1 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1318,4 +1318,19 @@
 	  This driver supports the QE serial ports on Freescale embedded
 	  PowerPC that contain a QUICC Engine.
 
+config SERIAL_SC26XX
+	tristate "SC2681/SC2692 serial port support"
+	depends on SNI_RM
+	select SERIAL_CORE
+	help
+	  This is a driver for the onboard serial ports of
+	  older RM400 machines.
+
+config SERIAL_SC26XX_CONSOLE
+	bool "Console on SC2681/SC2692 serial port"
+	depends on SERIAL_SC26XX
+	select SERIAL_CORE_CONSOLE
+	help
+	  Support for Console on SC2681/SC2692 serial ports.
+
 endmenu