[PATCH] SMP rewrite of mkiss

Rewrite the mkiss driver to make it SMP-proof following the example of
6pack.c.

Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/hamradio/Kconfig

@@ -1,6 +1,6 @@
 config MKISS
 	tristate "Serial port KISS driver"
-	depends on AX25 && BROKEN_ON_SMP
+	depends on AX25
 	---help---
 	  KISS is a protocol used for the exchange of data between a computer
 	  and a Terminal Node Controller (a small embedded system commonly