clk: Add Actions Semi OWL clock support

This commit adds Actions Semi OWL family base clock and S900 SoC
specific clock support. For S900 peripheral clock support, only UART
clock has been added for now.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/clk/owl/Makefile b/drivers/clk/owl/Makefile
new file mode 100644
index 0000000..9132dcc
--- /dev/null
+++ b/drivers/clk/owl/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier:	GPL-2.0+
+
+obj-$(CONFIG_CLK_S900) += clk_s900.o