rockchip: clk: guard set_parent implementations against OF_PLATDATA

The set_parent implementations do not make sense when OF_PLATDATA is
enabled.  We guard these against OF_PLATDATA and don't populate the
set_parent-op when this is the case.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/drivers/clk/rockchip/clk_rk3288.c b/drivers/clk/rockchip/clk_rk3288.c
index baa8122..552a71a 100644
--- a/drivers/clk/rockchip/clk_rk3288.c
+++ b/drivers/clk/rockchip/clk_rk3288.c
@@ -842,7 +842,7 @@
 	return new_rate;
 }
 
-static int rk3288_gmac_set_parent(struct clk *clk, struct clk *parent)
+static int __maybe_unused rk3288_gmac_set_parent(struct clk *clk, struct clk *parent)
 {
 	struct rk3288_clk_priv *priv = dev_get_priv(clk->dev);
 	struct rk3288_cru *cru = priv->cru;
@@ -880,7 +880,7 @@
 	return -EINVAL;
 }
 
-static int rk3288_clk_set_parent(struct clk *clk, struct clk *parent)
+static int __maybe_unused rk3288_clk_set_parent(struct clk *clk, struct clk *parent)
 {
 	switch (clk->id) {
 	case SCLK_MAC:
@@ -896,7 +896,9 @@
 static struct clk_ops rk3288_clk_ops = {
 	.get_rate	= rk3288_clk_get_rate,
 	.set_rate	= rk3288_clk_set_rate,
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	.set_parent	= rk3288_clk_set_parent,
+#endif
 };
 
 static int rk3288_clk_ofdata_to_platdata(struct udevice *dev)