x86: Don't relocate symbols which point to things that aren't relocated

This change adds an upper bound for symbols which are fixed up after u-boot
is relocated into RAM. This way portions that are left at their original
location can be referred to without having to manually fix up any pointers.

Signed-off-by: Gabe Black <gabeblack@chromium.org>
diff --git a/arch/x86/lib/realmode.c b/arch/x86/lib/realmode.c
index bf0d0aa..75511b2 100644
--- a/arch/x86/lib/realmode.c
+++ b/arch/x86/lib/realmode.c
@@ -30,11 +30,8 @@
 
 int realmode_setup(void)
 {
-	/*
-	 * The realmode section is not relocated and still in the ROM. The
-	 * __realmode_start symbol was adjusted, though, so adjust it back.
-	 */
-	ulong realmode_start = (ulong)&__realmode_start - gd->reloc_off;
+	/* The realmode section is not relocated and still in the ROM. */
+	ulong realmode_start = (ulong)&__realmode_start;
 	ulong realmode_size = (ulong)&__realmode_size;
 
 	/* copy the realmode switch code */