qcacmn: Add support for RSNX IE

SAE key derivation requires use of a secret element, PWE. This
element is deterministically discovered by repeatedly hashing
the password with some additional information until the
resulting hash is the abscissa of a point on the elliptic curve
(for ECC) or by exponentiating the hash digest to a constant to
produce an element (for FFC). This "hunting-and-pecking" loop
method is prone to side channel attacks.

To avoid this, a direct hashing to element technique in SAE is
introduced in IEEE P802.11-REVmd/D3.0. Support new RSNX IEEE
as part of the hash to element PWE derivation. The user space
sends the RSNX IE in the connect request.

Add support for new RSNX IE with element ID 244.

Change-Id: I61a40ff14e15612735c3f3750e2c47d764feeb62
CRs-Fixed: 2569600

umac/cmn_services/cmn_defs/inc/wlan_cmn_ieee80211.h

@@ -396,6 +396,7 @@ enum element_ie {
 	WLAN_ELEMID_REDUCED_NEIGHBOR_REPORT = 201,
 	WLAN_ELEMID_VENDOR           = 221,
 	WLAN_ELEMID_FILS_INDICATION  = 240,
+	WLAN_ELEMID_RSNXE            = 244,
 	WLAN_ELEMID_EXTN_ELEM        = 255,
 };