board: rk3399: Drop explicit uart enablement in spl_board_init

preloader_console_init is used for printing SPL boot banner that
usually called from spl_board_init.

The current spl_board_init in evb and rock960 is enabling explicit
pinctrl, debug uart prior to calling preloader_console_init which
eventually not required since board_init_f is already enabled
debug uart.

So, drop those explicit enablement calls from  spl_board_init of
evb, rock960.

Tested this by enabling CONFIG_SPL_BOARD_INIT and adding
u-boot,dm-pre-reloc property for uart node.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/board/rockchip/evb_rk3399/evb-rk3399.c b/board/rockchip/evb_rk3399/evb-rk3399.c
index bf2ad98..769b5d1 100644
--- a/board/rockchip/evb_rk3399/evb-rk3399.c
+++ b/board/rockchip/evb_rk3399/evb-rk3399.c
@@ -6,7 +6,6 @@
 #include <common.h>
 #include <dm.h>
 #include <dm/pinctrl.h>
-#include <dm/uclass-internal.h>
 #include <asm/arch-rockchip/periph.h>
 #include <power/regulator.h>
 #include <spl.h>
@@ -68,27 +67,7 @@
 
 void spl_board_init(void)
 {
-	struct udevice *pinctrl;
-	int ret;
-
-	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
-	if (ret) {
-		debug("%s: Cannot find pinctrl device\n", __func__);
-		goto err;
-	}
-
-	/* Enable debug UART */
-	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
-	if (ret) {
-		debug("%s: Failed to set up console UART\n", __func__);
-		goto err;
-	}
-
 	preloader_console_init();
-	return;
-err:
-	printf("%s: Error %d\n", __func__, ret);
 
-	/* No way to report error here */
-	hang();
+	return;
 }
diff --git a/board/vamrs/rock960_rk3399/rock960-rk3399.c b/board/vamrs/rock960_rk3399/rock960-rk3399.c
index 0f5ef3a..018e4b5 100644
--- a/board/vamrs/rock960_rk3399/rock960-rk3399.c
+++ b/board/vamrs/rock960_rk3399/rock960-rk3399.c
@@ -5,9 +5,6 @@
 
 #include <common.h>
 #include <dm.h>
-#include <dm/pinctrl.h>
-#include <dm/uclass-internal.h>
-#include <asm/arch-rockchip/periph.h>
 #include <power/regulator.h>
 #include <spl.h>
 
@@ -24,27 +21,7 @@
 
 void spl_board_init(void)
 {
-	struct udevice *pinctrl;
-	int ret;
-
-	ret = uclass_get_device(UCLASS_PINCTRL, 0, &pinctrl);
-	if (ret) {
-		debug("%s: Cannot find pinctrl device\n", __func__);
-		goto err;
-	}
-
-	/* Enable debug UART */
-	ret = pinctrl_request_noflags(pinctrl, PERIPH_ID_UART_DBG);
-	if (ret) {
-		debug("%s: Failed to set up console UART\n", __func__);
-		goto err;
-	}
-
 	preloader_console_init();
-	return;
-err:
-	printf("%s: Error %d\n", __func__, ret);
 
-	/* No way to report error here */
-	hang();
+	return;
 }