icnss2: Fix compilation error when CONFIG_MSM_QMP is not enabled
'qmp' is not defined in 'struct icnss_priv' when CONFIG_MSM_QMP
is not set, use 'use_direct_qmp' to check if 'qmp' is configured
or not.
Change-Id: I3095f7173c4368d04bfab0c1cefc901ea58fccd4
CRs-Fixed: 3661758