clk: sunxi-ng: Rename the internal structures

Rename the structures meant to be embedded in other structures to make it
consistent with the mux structure name

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>

drivers/clk/sunxi-ng/ccu_nkm.h

@@ -29,9 +29,9 @@ struct ccu_nkm {
 	u32			enable;
 	u32			lock;
 
-	struct _ccu_mult	n;
-	struct _ccu_mult	k;
-	struct _ccu_div		m;
+	struct ccu_mult_internal	n;
+	struct ccu_mult_internal	k;
+	struct ccu_div_internal		m;
 	struct ccu_mux_internal	mux;
 
 	struct ccu_common	common;