The macros attributing the Tx encap type have been erroneously
named as TX decap.
Rename all occurences of TX_DECAP_* to TX_ENCAP_*. Also add support
to send WMI vdev params for tx_encap and rx_decap values.
CRs-Fixed: 2533710
Change-Id: Id6ef2955868010b264e76d2a416d22d30d2acedc