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/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
index feacaee..b5cbf80 100644
--- a/drivers/clk/imx/clk-pllv3.c
+++ b/drivers/clk/imx/clk-pllv3.c
@@ -290,7 +290,7 @@
 		break;
 	default:
 		kfree(pll);
-		return ERR_PTR(-ENOTSUPP);
+		return ERR_PTR(-EINVAL);
 	}
 
 	pll->base = base;