clk: uniphier: add core support code for UniPhier clock driver

This includes UniPhier clock driver code, except SoC-specific
data arrays.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/Kconfig

@@ -209,5 +209,6 @@ source "drivers/clk/samsung/Kconfig"
 source "drivers/clk/sunxi-ng/Kconfig"
 source "drivers/clk/tegra/Kconfig"
 source "drivers/clk/ti/Kconfig"
+source "drivers/clk/uniphier/Kconfig"
 
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