qcacmn: Add vendor hang reason code for tasklet/credit latency

Define a new reason code in enum qca_wlan_vendor_hang_reason,
QCA_WLAN_TASKLET_CREDIT_LATENCY_DETECT, for tasklet/credit latency
detection.

Change-Id: I4852fc22f57d14d6eac30ddfd8361f2a63326981
CRs-Fixed: 2929164

os_if/linux/qca_vendor.h

@@ -804,6 +804,8 @@ enum qca_wlan_vendor_hang_reason {
 	QCA_WLAN_HANG_SUSPEND_NO_CREDIT = 25,
 	/* Bus failure */
 	QCA_WLAN_HANG_BUS_FAILURE = 26,
+	/* tasklet/credit latency found */
+	QCA_WLAN_HANG_TASKLET_CREDIT_LATENCY_DETECT = 27,
 };
 
 /**