phy: phy-rockchip-samsung-hdptx: Explicitly include pm_runtime.h

Driver makes use of helpers from pm_runtime.h, but relies on the header
file being implicitly included.

Explicitly pull the header in to avoid potential build failures in some
configurations.

Fixes: 553be28 ("phy: rockchip: Add Samsung HDMI/eDP Combo PHY driver")
Reviewed-by: Heiko Stuebner <[email protected]>
Signed-off-by: Cristian Ciocaltea <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: cristicc

drivers/phy/rockchip/phy-rockchip-samsung-hdptx.c

@@ -15,6 +15,7 @@
 #include <linux/of_platform.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/rational.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>