[PATCH] clk: exynos: Add header guard for clk-pll.h

[Sam Protsenko]

The clk-pll.h is going to be included in multiple files soon. Add
missing header guard to prevent possible build errors in future.

Signed-off-by: Sam Protsenko <semen.protsenko at linaro.org>
Fixes: 166097e87753 ("clk: exynos: add clock driver for Exynos7420 Soc")
---
 drivers/clk/exynos/clk-pll.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/clk/exynos/clk-pll.h b/drivers/clk/exynos/clk-pll.h
index c79aac44258b..7b7af5e67612 100644
--- a/drivers/clk/exynos/clk-pll.h
+++ b/drivers/clk/exynos/clk-pll.h
@@ -5,4 +5,9 @@
  * Thomas Abraham <thomas.ab at samsung.com>
  */
 
+#ifndef __EXYNOS_CLK_PLL_H
+#define __EXYNOS_CLK_PLL_H
+
 unsigned long pll145x_get_rate(unsigned int *con1, unsigned long fin_freq);
+
+#endif /* __EXYNOS_CLK_PLL_H */
-- 
2.39.2