u-boot: Fix the 85xxcds tsec bug

Fix the 85xxcds tsec bug.
When enable PCI, tsec.o should be added to u-boot.lds to make tsec work.

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
diff --git a/board/cds/mpc8555cds/u-boot.lds b/board/cds/mpc8555cds/u-boot.lds
index 2aa2ad7..9285928 100644
--- a/board/cds/mpc8555cds/u-boot.lds
+++ b/board/cds/mpc8555cds/u-boot.lds
@@ -69,6 +69,7 @@
     cpu/mpc85xx/interrupts.o (.text)
     cpu/mpc85xx/cpu_init.o (.text)
     cpu/mpc85xx/cpu.o (.text)
+    drivers/tsec.o (.text)
     cpu/mpc85xx/speed.o (.text)
     cpu/mpc85xx/pci.o (.text)
     common/dlmalloc.o (.text)