qcacld-3.0: Rectify sanity check in hdd_send_hang_reason

Currently in the driver, hdd_send_hang_reason() checks validity of
current context using wlan_hdd_validate_context(). This checks if the FW
is down and if recovery in progress along with other conditions. This is
a contradiction as the purpose of the API is to send the reason for
hang, which can come during FW down. The wlan_hdd_validate_context()
check prevents this from being sent to the userspace via the command
QCA_NL80211_VENDOR_SUBCMD_HANG.

Remove the wlan_hdd_validate_context() check as it is not required as
per the scenario.

Change-Id: I34da018ab4792f5c613d7ec2da8526261ee20e84
CRs-Fixed: 2554019

core/hdd/src/wlan_hdd_driver_ops.c

@@ -709,7 +709,7 @@ static void hdd_send_hang_reason(void)
 	enum qdf_hang_reason reason = QDF_REASON_UNSPECIFIED;
 	struct hdd_context *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
 
-	if (wlan_hdd_validate_context(hdd_ctx))
+	if (!hdd_ctx)
 		return;
 
 	cds_get_recovery_reason(&reason);