[SPARC]: Add sun4m LED driver.

This is a forward port of a 2.4.x sun4m LED driver written by Lars
Kotthoff.

Signed-off-by: Lars Kotthoff <metalhead@metalhead.ws>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 6537445..3cfb8be 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -201,6 +201,14 @@
 	  Only choose N if you know in advance that you will not need to modify
 	  OpenPROM settings on the running system.
 
+config SPARC_LED
+	tristate "Sun4m LED driver"
+	help
+	  This driver toggles the front-panel LED on sun4m systems
+	  in a user-specifyable manner.  It's state can be probed
+	  by reading /proc/led and it's blinking mode can be changed
+	  via writes to /proc/led
+
 source "fs/Kconfig.binfmt"
 
 config SUNOS_EMUL