[SPARC64]: Add SUN4V Hypervisor Console driver.

Since it can do things like BREAK and HUP, we implement
this as a serial uart driver.

This still needs interrupt probing code, as I haven't figured
out how interrupts will work or be probed for on SUN4V yet.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 4041122..57abcea 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -127,6 +127,9 @@
 /* Hilscher netx */
 #define PORT_NETX	71
 
+/* SUN4V Hypervisor Console */
+#define PORT_SUNHV	72
+
 #ifdef __KERNEL__
 
 #include <linux/config.h>