powerpc, 8xx: Fix fallout from "Fixup all 8xx u-boot.lds scripts"

Two linker scripts for 8xx was missed.
Signed-off-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se>

board/matrix_vision/mvsmr/u-boot.lds

@@ -62,7 +62,7 @@ SECTIONS
     _FIXUP_TABLE_ = .;
     KEEP(*(.fixup))
   }
-  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >> 2;
+  __got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
   __fixup_entries = (. - _FIXUP_TABLE_) >> 2;
 
   .data    :

board/rsdproto/u-boot.lds

@@ -74,11 +74,12 @@ SECTIONS
   PROVIDE (erotext = .);
   .reloc   :
   {
-    *(.got)
     _GOT2_TABLE_ = .;
-    *(.got2)
+    KEEP(*(.got2))
+    KEEP(*(.got))
+    PROVIDE(_GLOBAL_OFFSET_TABLE_ = . + 4);
     _FIXUP_TABLE_ = .;
-    *(.fixup)
+    KEEP(*(.fixup))
   }
   __got2_entries = ((_GLOBAL_OFFSET_TABLE_ - _GOT2_TABLE_) >> 2) - 1;
   __fixup_entries = (. - _FIXUP_TABLE_)>>2;