MIPS: Remove not used 8250-platform.c

When CONFIG_HAVE_STD_PC_SERIAL_PORT is set, there exists build errors
of 8250-platform.c due to linux/module.h is not included.

CONFIG_HAVE_STD_PC_SERIAL_PORT is not used in arch/mips for many years,
8250-platform.c is also not built and used, so it is not necessary to
fix the build errors, just remove the not used file 8250-platform.c and
the related code in Kconfig and Makefile.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/Kconfig

@@ -1358,9 +1358,6 @@ config MIPS_L1_CACHE_SHIFT
 	default "4" if MIPS_L1_CACHE_SHIFT_4
 	default "5"
 
-config HAVE_STD_PC_SERIAL_PORT
-	bool
-
 config ARC_CMDLINE_ONLY
 	bool
 

arch/mips/kernel/8250-platform.c

-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
- */
-#include <linux/init.h>
-#include <linux/serial_8250.h>
-
-#define PORT(base, int)							\
-{									\
-	.iobase		= base,						\
-	.irq		= int,						\
-	.uartclk	= 1843200,					\
-	.iotype		= UPIO_PORT,					\
-	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,		\
-	.regshift	= 0,						\
-}
-
-static struct plat_serial8250_port uart8250_data[] = {
-	PORT(0x3F8, 4),
-	PORT(0x2F8, 3),
-	PORT(0x3E8, 4),
-	PORT(0x2E8, 3),
-	{ },
-};
-
-static struct platform_device uart8250_device = {
-	.name			= "serial8250",
-	.id			= PLAT8250_DEV_PLATFORM,
-	.dev			= {
-		.platform_data	= uart8250_data,
-	},
-};
-
-static int __init uart8250_init(void)
-{
-	return platform_device_register(&uart8250_device);
-}
-
-module_init(uart8250_init);
-
-MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Generic 8250 UART probe driver");

arch/mips/kernel/Makefile

@@ -98,8 +98,6 @@ obj-$(CONFIG_MIPSR2_TO_R6_EMULATOR)	+= mips-r2-to-r6-emul.o
 
 CFLAGS_cpu-bugs64.o	= $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -x c /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
 
-obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT)	+= 8250-platform.o
-
 obj-$(CONFIG_PERF_EVENTS)	+= perf_event.o
 obj-$(CONFIG_HW_PERF_EVENTS)	+= perf_event_mipsxx.o