Kyle Evans cd78f5ff20 ofw_fdt: Simplify parts with new libfdt methods
libfdt now provides methods to iterate through subnodes and properties in a
convenient fashion.

Replace our ofw_fdt_{peer,child} searches with calls to their corresponding
libfdt methods. Rework ofw_fdt_nextprop to use the
fdt_for_each_property_offset macro, making it even more obvious what it's
doing.

No functional change intended.

Reviewed by:	nwhitehorn
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D14225
2018-02-26 14:00:23 +00:00
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