OF_STDOUT_PATH specifies the path to the device the kernel can use
for console output
OF_SOC specifies the proper name of the SOC node if one exists.
Patch by Kumar Gala 11 Jan 2006
CONFIG_OF_HAS_BD_T will put a copy of the bd_t
into the resulting flat device tree.
CONFIG_OF_HAS_UBOOT_ENV will copy the environment
variables from u-boot into the flat device tree
Patch by Kumar Gala 11 Jan 2006
Kumar Gala
Marian Balakowicz
Wolfgang Denk