powerpc: Add printk companion for ppc_md.progress

This patch adds a printk companion to replace the udbg progress function
when initmem is freed.

Suggested-by: Milton Miller <miltonm@bga.com>
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Carroll <dcarroll@astekcorp.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h
index dae1934..c77cb7a 100644
--- a/arch/powerpc/include/asm/setup.h
+++ b/arch/powerpc/include/asm/setup.h
@@ -3,4 +3,6 @@
 
 #include <asm-generic/setup.h>
 
+extern void ppc_printk_progress(char *s, unsigned short hex);
+
 #endif	/* _ASM_POWERPC_SETUP_H */