[MFD] Add SA11x0 MCP support

This adds support for the MCP interface found on SA11x0 devices.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index e7d1f31..1588a59 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -7,4 +7,10 @@
 config MCP
 	tristate
 
+# Interface drivers
+config MCP_SA11X0
+	tristate "Support SA11x0 MCP interface"
+	depends on ARCH_SA1100
+	select MCP
+
 endmenu