Dpdk backend: optional and range match kinds translate to wildcard match for dpdk

[usha1830]

Dpdk target implements both optional and range match_kind as ternary (wildcard) match
Optional match kind is essentially a ternary match where the mask is restricted to be either “every bit matches exactly”, or “every bit is wildcard”.

For the range match_kind, p4-dpdk supports it via wildcard match as long as the range can be expressed by a mask. For ex: 0..7 can be expressed using mask /0x7

P4C only needs to emit wildcard for both of these match_kinds