[POWERPC] PS3: Save os-area params to device tree

Add the PS3 os-area startup params to the device tree.  This allows
a second stage kernel loaded with kexec to use these values.

Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
3 files changed