dt: Move device tree documentation out of powerpc directory
authorGrant Likely <grant.likely@secretlab.ca>
Wed, 26 Jan 2011 17:10:40 +0000 (10:10 -0700)
committerGrant Likely <grant.likely@secretlab.ca>
Mon, 31 Jan 2011 07:09:01 +0000 (00:09 -0700)
The device tree is used by more than just PowerPC.  Make the documentation
directory available to all.

v2: reorganized files while moving to create arch and driver specific
    directories.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

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