wigig_sensing: do not deassert DRI on Data Ready DRI

This change is a performance optimization. Instead of sending a DRI
deassert command at the end of a Data Ready DRI, the FW shall get a FIFO
empty internal signal. FW sets the don't deassert bit in relevant cases,
like Data Ready DRI, or SYSASSERT DRI.

Change-Id: I810e891a82b80c256857987b446c2162bacc399e
Signed-off-by: Gidon Studinski <gidons@codeaurora.org>