addresses, rather than trying to read a byte of data from the device.
Some devices don't like to be read from (certain clock devices are, I'm
told, write-only!), while others expect to be asked only for words (or
pairs of bytes).
While here, skip a bunch of i2c addresses that can't (or at the very
least, shouldn't) have any slave devices.
This is the only use in NetBSD of the quick_read/quick_write protocol,
and it remains disabled by default. I've updated all the generic i2c
drivers to handle the quick_* protocols, but several port-specific
drivers have not been updated since I'm in no position to verify that
the changes work. Assistance from sandpoint, arm/xscale, evbarm/gumstix,
mips/alchemy, and macppc would be greatly appreciated.
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