K 10
svn:author
V 8
jhibbits
K 8
svn:date
V 27
2016-09-30T02:48:40.063860Z
K 7
svn:log
V 517
Use the cell-index property as the unit number if available.

Summary:
NXP/Freescale, among others, includes an optional cell-index property
on nodes to denote the SoC block number of the node.  This can be useful if, for
example, a node is disabled or nonexistent in the fdt, or the blocks are not
organized in address-sorted order.  For instance, on the P1022, DMA2 is located
at CCSR offset 0xC000, while DMA1 is located at 0x21000.

Reviewed By: jmcneill

Differential Revision: https://reviews.freebsd.org/D8054

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