powerpc, 8xx: Fixup all 8xx u-boot.lds scripts

8xx was left behind when fixing up powerpc linking
scripts to support -fpic.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
diff --git a/board/rsdproto/u-boot.lds b/board/rsdproto/u-boot.lds
index b36047a..81728db 100644
--- a/board/rsdproto/u-boot.lds
+++ b/board/rsdproto/u-boot.lds
@@ -80,7 +80,7 @@
     _FIXUP_TABLE_ = .;
     *(.fixup)
   }
-  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+  __got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
   __fixup_entries = (. - _FIXUP_TABLE_)>>2;
 
   .data    :