qcacmn: QCA vendor command support to reset configuration for eLNA bypass

Add support to reset eLNA bypass configuration to default behavior.
If value of 2 is configured, the driver can choose either to
disable/enable eLNA bypass control and there is no enforcement
from userspace.

Change-Id: I813abe5beda49e394ff381aae57c78069ca28784
CRs-Fixed: 3172147

os_if/linux/qca_vendor.h

@@ -4746,7 +4746,10 @@ enum qca_wlan_vendor_attr_config {
 	QCA_WLAN_VENDOR_ATTR_CONFIG_DISCONNECT_IES = 58,
 
 	/* 8-bit unsigned value for ELNA bypass.
-	 * 1-Enable, 0-Disable
+	 * 0 - Disable eLNA bypass.
+	 * 1 - Enable eLNA bypass.
+	 * 2 - Reset eLNA bypass configuration, the driver should
+	 *	revert to the default configuration of eLNA bypass.
 	 */
 	QCA_WLAN_VENDOR_ATTR_CONFIG_ELNA_BYPASS = 59,