of/flattree: merge find_flat_dt_string and initial_boot_params

Merge common code between Microblaze and PowerPC.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 41d432b..d1a79f3 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -57,7 +57,11 @@
 	u32	dt_struct_size;		/* size of the DT structure block */
 };
 
+/* TBD: Temporary export of fdt globals - remove when code fully merged */
+extern struct boot_param_header *initial_boot_params;
+
 /* For scanning the flat device-tree at boot time */
+extern char *find_flat_dt_string(u32 offset);
 extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
 					    const char *uname, int depth,
 					    void *data),