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/clk-hsdk-cgu.c b/drivers/clk/clk-hsdk-cgu.c
index 449b430..26b0aa9 100644
--- a/drivers/clk/clk-hsdk-cgu.c
+++ b/drivers/clk/clk-hsdk-cgu.c
@@ -718,7 +718,7 @@
 	if (clk->map[sclk->id].set_rate)
 		return clk->map[sclk->id].set_rate(sclk, rate);
 
-	return -ENOTSUPP;
+	return -EINVAL;
 }
 
 static int hsdk_cgu_disable(struct clk *sclk)
@@ -731,7 +731,7 @@
 	if (clk->map[sclk->id].disable)
 		return clk->map[sclk->id].disable(sclk);
 
-	return -ENOTSUPP;
+	return -EINVAL;
 }
 
 static const struct clk_ops hsdk_cgu_ops = {