x86: Use sections header to obtain link symbols

These are defined in asm-generic/sections.h, so remove them from
architecture-specific files.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/coreboot/sdram.c

@@ -28,6 +28,7 @@
 #include <asm/u-boot-x86.h>
 #include <asm/global_data.h>
 #include <asm/processor.h>
+#include <asm/sections.h>
 #include <asm/arch/sysinfo.h>
 #include <asm/arch/tables.h>
 

arch/x86/cpu/u-boot.lds

@@ -53,6 +53,7 @@ SECTIONS
 
 	. = ALIGN(4);
 	__data_end = .;
+	__init_end = .;
 
 	. = ALIGN(4);
 	.dynsym : { *(.dynsym*) }
@@ -64,9 +65,6 @@ SECTIONS
 	. = ALIGN(4);
 	_end = .;
 
-	. = ALIGN(4);
-
-	__end = .;
 	.bss __rel_dyn_start (OVERLAY) : {
 		__bss_start = .;
 		*(.bss)

arch/x86/include/asm/u-boot-x86.h

@@ -24,15 +24,6 @@
 #ifndef _U_BOOT_I386_H_
 #define _U_BOOT_I386_H_	1
 
-/* Exports from the Linker Script */
-extern char __text_start[];
-extern ulong __data_end;
-extern ulong __rel_dyn_start;
-extern ulong __rel_dyn_end;
-extern char __bss_start[];
-extern ulong __bss_end;
-extern char _end[];
-
 /* cpu/.../cpu.c */
 int x86_cpu_init_r(void);
 int cpu_init_r(void);

arch/x86/lib/board.c

@@ -38,6 +38,7 @@
 #include <asm/u-boot-x86.h>
 #include <asm/relocate.h>
 #include <asm/processor.h>
+#include <asm/sections.h>
 
 #include <asm/init_helpers.h>
 #include <asm/init_wrappers.h>

arch/x86/lib/init_helpers.c

@@ -32,6 +32,7 @@
 #include <spi.h>
 #include <status_led.h>
 #include <asm/processor.h>
+#include <asm/sections.h>
 #include <asm/u-boot-x86.h>
 #include <linux/compiler.h>
 

arch/x86/lib/relocate.c

@@ -36,6 +36,7 @@
 #include <malloc.h>
 #include <asm/u-boot-x86.h>
 #include <asm/relocate.h>
+#include <asm/sections.h>
 #include <elf.h>
 
 int copy_uboot_to_ram(void)