block/sioplus: tweaks
SIOplus: Allow 0ms deadline latency, increase the read speed

Source: previous commit
Add ondemandplus, Disable ondemanplus for missing definitions
Linux 3.0.17
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Linux 3.0.31
net: wireless: bcmdhd: Reduce priority for dhd_dpc and watchdog

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>