Now that pre-relocation devicetree mnipulation uses an event rather than
a weak function, update the docs and remove the function from the init.h
header.
Series-to: u-boot
Cover-letter:
fdt: Use events for pre-relocation devicetree manipulation
At present a weak function is used to modify the devicetree before
relocation. This is not ideal, since it is hard to find out whether a
board provides this function or not.
Another issue is that the fixups happen in multiple places in the init
sequences, with a confusing set of #if checks.
A final issue is that the fixups are done on the flat tree, which can be
quite inefficient.
This series introduces a new event to handle these fixups, converts all
boards and update the docs. The event passes an oftree instead of a
void * so that in future it can support livetree updates.
It would be possible to remove OF_BOARD_FIXUP and just always send the
event, but this would have a small code-size impact on the majority of
boards, since only about 45 use this feature.
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