imx: phycore_imx8mm/p: clean up board watchdog code

pinctrl_wdog already marked u-boot,dm-spl, so clean up board code.

The set_wdog_reset() function is not necessary as this is handled by
the imx_watchdog.c driver due to the 'fsl,ext-reset-output' property
being set.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Teresa Remmet <t.remmet@phytec.de>
diff --git a/board/phytec/phycore_imx8mm/spl.c b/board/phytec/phycore_imx8mm/spl.c
index 7f24a3a..d87ab6d 100644
--- a/board/phytec/phycore_imx8mm/spl.c
+++ b/board/phytec/phycore_imx8mm/spl.c
@@ -57,23 +57,6 @@
 	return 0;
 }
 
-#define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_ODE)
-
-static iomux_v3_cfg_t const wdog_pads[] = {
-	IMX8MM_PAD_GPIO1_IO02_WDOG1_WDOG_B  | MUX_PAD_CTRL(WDOG_PAD_CTRL),
-};
-
-int board_early_init_f(void)
-{
-	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
-
-	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
-
-	set_wdog_reset(wdog);
-
-	return 0;
-}
-
 void board_init_f(ulong dummy)
 {
 	int ret;
@@ -82,8 +65,6 @@
 
 	init_uart_clk(2);
 
-	board_early_init_f();
-
 	/* Clear the BSS. */
 	memset(__bss_start, 0, __bss_end - __bss_start);
 
diff --git a/board/phytec/phycore_imx8mp/spl.c b/board/phytec/phycore_imx8mp/spl.c
index 38a581b..faed6fc 100644
--- a/board/phytec/phycore_imx8mp/spl.c
+++ b/board/phytec/phycore_imx8mp/spl.c
@@ -89,23 +89,6 @@
 	return 0;
 }
 
-#define WDOG_PAD_CTRL   (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
-
-static iomux_v3_cfg_t const wdog_pads[] = {
-	MX8MP_PAD_GPIO1_IO02__WDOG1_WDOG_B  | MUX_PAD_CTRL(WDOG_PAD_CTRL),
-};
-
-int board_early_init_f(void)
-{
-	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
-
-	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
-
-	set_wdog_reset(wdog);
-
-	return 0;
-}
-
 void board_init_f(ulong dummy)
 {
 	int ret;
@@ -114,8 +97,6 @@
 
 	init_uart_clk(0);
 
-	board_early_init_f();
-
 	ret = spl_early_init();
 	if (ret) {
 		debug("spl_early_init() failed: %d\n", ret);