x86: Clean up asm-offsets

Move GD_BIST from lib/asm-offsets.c to arch/x86/lib/asm-offsets.c
as it is x86 arch specific stuff. Also remove GENERATED_GD_RELOC_OFF
which is not referenced anymore.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/start.S

 /*
- *  U-boot - x86 Startup Code
+ *  U-Boot - x86 Startup Code
  *
  * (C) Copyright 2008-2011
  * Graeme Russ, <graeme.russ@gmail.com>
@@ -17,6 +17,7 @@
 #include <asm/processor.h>
 #include <asm/processor-flags.h>
 #include <generated/generic-asm-offsets.h>
+#include <generated/asm-offsets.h>
 
 .section .text
 .code32

arch/x86/lib/asm-offsets.c

@@ -17,6 +17,6 @@
 
 int main(void)
 {
-	DEFINE(GENERATED_GD_RELOC_OFF, offsetof(gd_t, reloc_off));
+	DEFINE(GD_BIST, offsetof(gd_t, arch.bist));
 	return 0;
 }

lib/asm-offsets.c

@@ -31,9 +31,6 @@ int main(void)
 #ifdef CONFIG_SYS_MALLOC_F_LEN
 	DEFINE(GD_MALLOC_BASE, offsetof(struct global_data, malloc_base));
 #endif
-#ifdef CONFIG_X86
-	DEFINE(GD_BIST, offsetof(struct global_data, arch.bist));
-#endif
 
 #if defined(CONFIG_ARM)