clk: Update drivers to use -EINVAL

At present some drivers use -ENOSUPP to indicate that an unknown or
unsupported clock is used. Most use -EINVAL, indicating an invalid value,
so convert everything to that.

Signed-off-by: Simon Glass <sjg@chromium.org>

Acked-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/clk/mvebu/armada-37xx-periph.c b/drivers/clk/mvebu/armada-37xx-periph.c
index 0132fcb..b0f47c3 100644
--- a/drivers/clk/mvebu/armada-37xx-periph.c
+++ b/drivers/clk/mvebu/armada-37xx-periph.c
@@ -340,7 +340,7 @@
 		return -EINVAL;
 
 	if (!periph_clk->can_gate)
-		return -ENOTSUPP;
+		return -EINVAL;
 
 	if (enable)
 		clrbits_le32(priv->reg + CLK_DIS, periph_clk->disable_bit);
@@ -408,7 +408,7 @@
 		return old_rate;
 
 	if (!periph_clk->can_gate || !periph_clk->dividers)
-		return -ENOTSUPP;
+		return -EINVAL;
 
 	parent_rate = get_parent_rate(priv, clk->id);
 	if (parent_rate == -EINVAL)
@@ -445,7 +445,7 @@
 		return -EINVAL;
 
 	if (!periph_clk->can_mux || !periph_clk->can_gate)
-		return -ENOTSUPP;
+		return -EINVAL;
 
 	ret = clk_get_by_index(clk->dev, 0, &check_parent);
 	if (ret < 0)