Print ststus message when booting

Add a couple of calls to pboot_message() to give some feedback when
an option (or gameos) is selected.

Also, convert pboot_message to varargs, to allow more flexible message
formats.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/petitboot.h b/petitboot.h
index a77bfef..893be04 100644
--- a/petitboot.h
+++ b/petitboot.h
@@ -1,5 +1,6 @@
 
 #include <libtwin/twin.h>
+#include <stdarg.h>
 
 #define LOG(fmt...)	printf(fmt)
 
@@ -14,4 +15,4 @@ int pboot_remove_device(const char *dev_id);
 
 int pboot_start_device_discovery(int udev_trigger);
 void pboot_exec_option(void *data);
-void pboot_message(const char *message);
+void pboot_message(const char *fmt, ...);