FDT changes

[Aleksandr Rybalko]

Hello embedded hackers!

(I'm not on ppc@ list, so answer to all or CC me)

I made small patch [0], it's give two features:
1. We see physical addresses, like on all other systems which not use
FDT.
2. It's not panic on attempt to do bus_space_map on "reg" propertie
(for cases when bus is SPI/I2C/etc.)

Please-please-please, give me your comments.

If nobody objects, I will commit it at the end of Jan 2013 (to not
worry anyone on holidays :) )

[0] http://people.freebsd.org/~ray/2012-12-25_fdt_correct_resource.diff

WBW
-- 
Aleksandr Rybalko <ray at freebsd.org>