clk: rockchip: Staticize file-scope declarations

Add missing static to local (file-scope only) symbols.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c
index 556ce04..e4f9d47 100644
--- a/drivers/clk/rockchip/clk-rk3188.c
+++ b/drivers/clk/rockchip/clk-rk3188.c
@@ -26,7 +26,7 @@
 	apll, cpll, dpll, gpll,
 };
 
-struct rockchip_pll_rate_table rk3188_pll_rates[] = {
+static struct rockchip_pll_rate_table rk3188_pll_rates[] = {
 	RK3066_PLL_RATE(2208000000, 1, 92, 1),
 	RK3066_PLL_RATE(2184000000, 1, 91, 1),
 	RK3066_PLL_RATE(2160000000, 1, 90, 1),