wlan: Ignore TX completion failure for Data Null (PM=1) mode during roam.

Scan failure during roaming. Add additional scan modes to decide whether
to ignore TX completion failure for Data Null (PM=1) mode during roam
scenarios.

Change-Id: Ib99a02ad985677f982666a0ed40d7843f80b51cb
CR-Fixed: 405480
diff --git a/riva/inc/wlan_hal_msg.h b/riva/inc/wlan_hal_msg.h
index f3e3fde..76e75b5 100644
--- a/riva/inc/wlan_hal_msg.h
+++ b/riva/inc/wlan_hal_msg.h
@@ -396,6 +396,8 @@
    eHAL_SYS_MODE_SCAN,
    eHAL_SYS_MODE_PROMISC,
    eHAL_SYS_MODE_SUSPEND_LINK,
+   eHAL_SYS_MODE_ROAM_SCAN,
+   eHAL_SYS_MODE_ROAM_SUSPEND_LINK,
    eHAL_SYS_MODE_MAX = WLAN_HAL_MAX_ENUM_SIZE
 } eHalSysMode;