qcacmn: Add RX frame pending check for WoW

Sometimes frames are queued to dp_rx_thread wait queue
during WoW suspend in progress. At this time dp_rx_thread
is in SUSPEND state and these frames can't deliver to Linux
Stack, for ICMP case, if no other frames come to wake up
system, ICMP timeout will happen. Add a RX suspend check
in WoW to avoid suspend when frame comes before WMI_WOW_ENABLE
sends to FW

Change-Id: I756d3127f75da8f0e6e303c1250c01ce0c6ac573
CRs-Fixed: 2756263

dp/inc/cdp_txrx_cmn.h

@@ -2651,4 +2651,18 @@ cdp_soc_config_full_mon_mode(ol_txrx_soc_handle soc, uint8_t val)
 	return soc->ops->mon_ops->config_full_mon_mode(soc, val);
 }
 
+/**
+ * cdp_rx_get_pending() - Get number of pending frames of RX threads
+ * @soc: opaque soc handle
+ * Return: number of pending frames
+ */
+static inline int
+cdp_rx_get_pending(ol_txrx_soc_handle soc)
+{
+	if (!soc || !soc->ol_ops ||
+	    !soc->ol_ops->dp_rx_get_pending)
+		return 0;
+
+	return soc->ol_ops->dp_rx_get_pending(soc);
+}
 #endif /* _CDP_TXRX_CMN_H_ */