Fix compilation error if LSM_DET_EVENT_TYPE_GENERIC isn't defined.

Change-Id: I2d107866c6724a4f89fa94cf7b8851a89cb2c599
diff --git a/st_hw_session_lsm.c b/st_hw_session_lsm.c
index 735f7f0..56c373c 100644
--- a/st_hw_session_lsm.c
+++ b/st_hw_session_lsm.c
@@ -708,7 +708,8 @@
    lsm_param_info_t *det_event_type_params __unused,
    struct st_module_param_info *mparams __unused,
    uint16_t stage_idx __unused,
-   st_module_type_t version __unused
+   st_module_type_t version __unused,
+   st_hw_session_lsm_t *p_lsm_ses __unused
 )
 {
     return false;