[PATCH] powerpc: add hvc backend for rtas

Current Cell hardware is using the console through a set
of rtas calls. This driver is needed to get console
output on those boards.

Signed-off-by: Arnd Bergmann <abergman@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index e6c0333..a73cb49 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -43,6 +43,7 @@
 obj-$(CONFIG_RIO)		+= rio/ generic_serial.o
 obj-$(CONFIG_HVC_DRIVER)	+= hvc_console.o
 obj-$(CONFIG_HVC_CONSOLE)	+= hvc_vio.o hvsi.o
+obj-$(CONFIG_HVC_RTAS)		+= hvc_rtas.o
 obj-$(CONFIG_RAW_DRIVER)	+= raw.o
 obj-$(CONFIG_SGI_SNSC)		+= snsc.o snsc_event.o
 obj-$(CONFIG_MMTIMER)		+= mmtimer.o