PPC4xx: Create "liebherr" vendor directory

In preparation of some new Liebherr boards to be added soon, a new
"liebherr" vendor directory gets created, and the "lwmon5" board
directory is moved into this new vendor directory.

cc: Stefan Roese <sr@denx.de>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/powerpc/cpu/ppc4xx/Kconfig b/arch/powerpc/cpu/ppc4xx/Kconfig
index 945e771..efd3165 100644
--- a/arch/powerpc/cpu/ppc4xx/Kconfig
+++ b/arch/powerpc/cpu/ppc4xx/Kconfig
@@ -152,7 +152,7 @@
 source "board/gdsys/dlvision/Kconfig"
 source "board/gdsys/gdppc440etx/Kconfig"
 source "board/gdsys/intip/Kconfig"
-source "board/lwmon5/Kconfig"
+source "board/liebherr/lwmon5/Kconfig"
 source "board/mosaixtech/icon/Kconfig"
 source "board/mpl/mip405/Kconfig"
 source "board/mpl/pip405/Kconfig"