should improve flash access times. Should be harmless to gnerally
enable regardless if a flash supporting dual reads is attached. In
doubt, spi-nor will just fall back to serial reads.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 46725
Some CFEs seem to misconfigure the mapped memory flash access with
fast read but without a dummy byte, causing all accesses to be prefixed
with 0xff.
This of course breaks reading out the nvram, so do not just move back to
single i/o accessors, but also ensure that the dummy byte is correctly
set.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 46707