qcacld-3.0: Replace idle timeout flush in fw down

I1bfa8ab7329040c0b5ba989c0d7de7bf7228dd35 moved the idle timeout work
flush in an attempt to address a regression caused by moving the WMI
stop call in Iea53931771afd93ffaeabf704bbaffcf2460284f. Later, the WMI
stop call change was ultimately reverted in
I91046efeab8bc13b9f5c37d5a4d02b66c63e35a9, but the flush call was left
in its new location. Replace the original call site of the idle timeout
work flush, from before Iea53931771afd93ffaeabf704bbaffcf2460284f.

Change-Id: I21d74e02b5491dd3b42bb668329d09e77b416b7d
CRs-Fixed: 2339335
1 file changed