Merge branch 'kill_tasklet_hi_enable'

Quentin Lambert says:

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Remove redundant function

tasklet_hi_enable and tasklet_enable are redundant. Since
tasklet_hi_enable is used only 6 times in 1 file, the first
patch changes calls to the function with calls to tasklet_enable.

The second patch removes tasklet_hi_enable definition.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>