ARM: mach-imx: imx6ul: remove not optional ethernet refclock overwrite

Ethernet refclock direction is board specific and should be configurable
by devicetree. In fact there are board not working with this defaults,
which will be fixed by separate patch.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: olerem

arch/arm/mach-imx/mach-imx6ul.c

@@ -4,8 +4,6 @@
  */
 #include <linux/irqchip.h>
 #include <linux/mfd/syscon.h>
-#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
-#include <linux/micrel_phy.h>
 #include <linux/of_platform.h>
 #include <linux/phy.h>
 #include <linux/regmap.h>
@@ -16,30 +14,12 @@
 #include "cpuidle.h"
 #include "hardware.h"
 
-static void __init imx6ul_enet_clk_init(void)
-{
-	struct regmap *gpr;
-
-	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6ul-iomuxc-gpr");
-	if (!IS_ERR(gpr))
-		regmap_update_bits(gpr, IOMUXC_GPR1, IMX6UL_GPR1_ENET_CLK_DIR,
-				   IMX6UL_GPR1_ENET_CLK_OUTPUT);
-	else
-		pr_err("failed to find fsl,imx6ul-iomux-gpr regmap\n");
-}
-
-static inline void imx6ul_enet_init(void)
-{
-	imx6ul_enet_clk_init();
-}
-
 static void __init imx6ul_init_machine(void)
 {
 	imx_print_silicon_rev(cpu_is_imx6ull() ? "i.MX6ULL" : "i.MX6UL",
 		imx_get_soc_revision());
 
 	of_platform_default_populate(NULL, NULL, NULL);
-	imx6ul_enet_init();
 	imx_anatop_init();
 	imx6ul_pm_init();
 }