Revert "Correct fixup relocation for MPC5xxx"

This reverts commit 6f7576b20ecf0d040c3ac3b032b5cbc860e38a90.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/cpu/mpc5xxx/u-boot-customlayout.lds b/cpu/mpc5xxx/u-boot-customlayout.lds
index 1107943..123a14c 100644
--- a/cpu/mpc5xxx/u-boot-customlayout.lds
+++ b/cpu/mpc5xxx/u-boot-customlayout.lds
@@ -66,6 +66,7 @@
     common/environment.o        (.ppcenv)
 
     *(.text)
+    *(.fixup)
     *(.got1)
     . = ALIGN(16);
     *(.rodata)