qcacmn: Clear WMI cmd buffer after TX completion

WMI command buffer is not cleared after WMI command TX completion.
For DISA certification TK and GTK should not remain in the memory
area after disconnection. Since WMI command buffer is not cleared,
hence content of TK and GTK is still in host memory region.
Clear WMI cmd buffer after TX completion.

Propagation from qcacld-2.0 to qcacmn.

Change-Id: Ib09a77b630c932409645b7a989bd959f0ed4f514
CRs-Fixed: 1060982
1 file changed