[Gta04-owner] Fix uboot build, with non GNU-ld

[Lukas Märdian]

Hi,
the following patch fixes the build of the GTA04 u-boot on toolchains
which do not use the default GNU-ld but e.g. gold.

With this patch applied I can build u-boot according to:
  http://projects.goldelico.com/p/gta04-uboot/page/Build/

BR,
  Lukas