exynos: Simplify calling of exynos_dp_phy_ctrl()

This function controls enabling the EDP PHY. Rename it and drop the existing
weak functions, which are confusing.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/video/exynos/exynos_dp.c b/drivers/video/exynos/exynos_dp.c
index 9945c4b..88926b9 100644
--- a/drivers/video/exynos/exynos_dp.c
+++ b/drivers/video/exynos/exynos_dp.c
@@ -15,6 +15,7 @@
 #include <asm/arch/cpu.h>
 #include <asm/arch/dp_info.h>
 #include <asm/arch/dp.h>
+#include <asm/arch/power.h>
 #include <fdtdec.h>
 #include <libfdt.h>
 
@@ -22,12 +23,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void __exynos_set_dp_phy(unsigned int onoff)
-{
-}
-void exynos_set_dp_phy(unsigned int onoff)
-	__attribute__((weak, alias("__exynos_set_dp_phy")));
-
 static void exynos_dp_disp_info(struct edp_disp_info *disp_info)
 {
 	disp_info->h_total = disp_info->h_res + disp_info->h_sync_width +
@@ -959,7 +954,7 @@
 
 	exynos_dp_disp_info(&edp_info->disp_info);
 
-	exynos_set_dp_phy(1);
+	exynos_dp_phy_ctrl(1);
 
 	ret = exynos_dp_init_dp(dp_regs);
 	if (ret != EXYNOS_DP_SUCCESS) {