ARM: UniPhier: remove unused checkboard() functions

Since commit 0365ffcc (generic-board: show model name in
board_init_f() too), checkboard() is invoked only when
show_board_info() fails to get the model name from Device Tree.
It never happens because UniPhier SoCs now only work with
CONFIG_OF_CONTROL and all the root nodes of UniPhier device trees
have the "model" property.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

arch/arm/cpu/armv7/uniphier/ph1-ld4/Makefile

@@ -2,7 +2,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_DISPLAY_BOARDINFO) += board_info.o
 obj-$(if $(CONFIG_OF_CONTROL),,y) += platdevice.o
 obj-y += boot-mode.o
 obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o

arch/arm/cpu/armv7/uniphier/ph1-ld4/board_info.c

-/*
- * Copyright (C) 2012-2014 Panasonic Corporation
- *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/arch/board.h>
-
-int checkboard(void)
-{
-	puts("Board: PH1-LD4 Board\n");
-
-	return check_support_card();
-}

arch/arm/cpu/armv7/uniphier/ph1-pro4/Makefile

@@ -2,7 +2,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_DISPLAY_BOARDINFO) += board_info.o
 obj-$(if $(CONFIG_OF_CONTROL),,y) += platdevice.o
 obj-y += boot-mode.o
 obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o

arch/arm/cpu/armv7/uniphier/ph1-pro4/board_info.c

-/*
- * Copyright (C) 2012-2014 Panasonic Corporation
- *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/arch/board.h>
-
-int checkboard(void)
-{
-	puts("Board: PH1-Pro4 Board\n");
-
-	return check_support_card();
-}

arch/arm/cpu/armv7/uniphier/ph1-sld8/Makefile

@@ -2,7 +2,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_DISPLAY_BOARDINFO) += board_info.o
 obj-$(if $(CONFIG_OF_CONTROL),,y) += platdevice.o
 obj-y += boot-mode.o
 obj-$(CONFIG_DEBUG_LL) += lowlevel_debug.o

arch/arm/cpu/armv7/uniphier/ph1-sld8/board_info.c

-/*
- * Copyright (C) 2012-2014 Panasonic Corporation
- *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/arch/board.h>
-
-int checkboard(void)
-{
-	puts("Board: PH1-sLD8 Board\n");
-
-	return check_support_card();
-}