sparc: Create common header file for prom_{32,64}.c

This is where common declarations will go as we unify
these files as much as possible into common code.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/prom.h b/arch/sparc/kernel/prom.h
new file mode 100644
index 0000000..dce53de
--- /dev/null
+++ b/arch/sparc/kernel/prom.h
@@ -0,0 +1,10 @@
+#ifndef __PROM_H
+#define __PROM_H
+
+#include <linux/spinlock.h>
+#include <asm/prom.h>
+
+extern struct device_node *allnodes;	/* temporary while merging */
+extern rwlock_t devtree_lock;	/* temporary while merging */
+
+#endif /* __PROM_H */