fdt_support: Move of_read_number to fdt_support.h

This is being done so that it can be used outside 'fdt_support.c'. Making
life more convenient when reading device node properties that can be 32
or 64 bits long.
Signed-off-by: NArnab Basu <arnab.basu@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>

common/fdt_support.c

@@ -930,15 +930,6 @@ void fdt_del_node_and_alias(void *blob, const char *alias)
 	fdt_delprop(blob, off, alias);
 }
 
-/* Helper to read a big number; size is in cells (not bytes) */
-static inline u64 of_read_number(const fdt32_t *cell, int size)
-{
-	u64 r = 0;
-	while (size--)
-		r = (r << 32) | fdt32_to_cpu(*(cell++));
-	return r;
-}
-
 #define PRu64	"%llx"
 
 /* Max address size we deal with */

include/fdt_support.h

@@ -133,6 +133,15 @@ static inline int fdt_status_fail_by_alias(void *fdt, const char *alias)
 	return fdt_set_status_by_alias(fdt, alias, FDT_STATUS_FAIL, 0);
 }
 
+/* Helper to read a big number; size is in cells (not bytes) */
+static inline u64 of_read_number(const fdt32_t *cell, int size)
+{
+	u64 r = 0;
+	while (size--)
+		r = (r << 32) | fdt32_to_cpu(*(cell++));
+	return r;
+}
+
 #endif /* ifdef CONFIG_OF_LIBFDT */
 
 #ifdef USE_HOSTCC