net/bnxt: support dynamic encap action

net/bnxt: support dynamic encap action

The encapsulation record processing is enhanced to handle data
dynamically. Different combinations of VXLAN encapsulation using
no VLAN or single or double VLAN can be supported and also supports
both IPv4 and IPv6 versions.

Signed-off-by: Kishore Padmanabha <kishore.padmanabha@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>