ice: add support BIG TCP on IPv6

Enable sending BIG TCP packets on IPv6 in the ice driver using generic
ipv6_hopopt_jumbo_remove helper for stripping HBH header.

Tested:
netperf -t TCP_RR -H 2001:db8:0:f101::1  -- -r80000,80000 -O MIN_LATENCY,P90_LATENCY,P99_LATENCY,TRANSACTION_RATE

Tested on two different setups. In both cases, the following settings were
applied after loading the changed driver:

ip link set dev enp175s0f1np1 gso_max_size 130000
ip link set dev enp175s0f1np1 gro_max_size 130000
ip link set dev enp175s0f1np1 mtu 9000

First setup:
Before:
Minimum      90th         99th         Transaction
Latency      Percentile   Percentile   Rate
Microseconds Latency      Latency      Tran/s
             Microseconds Microseconds
134          279          410          3961.584

After:
Minimum      90th         99th         Transaction
Latency      Percentile   Percentile   Rate
Microseconds Latency      Latency      Tran/s
             Microseconds Microseconds
135          178          216          6093.404

The other setup:
Before:
Minimum      90th         99th         Transaction
Latency      Percentile   Percentile   Rate
Microseconds Latency      Latency      Tran/s
             Microseconds Microseconds
218          414          478          2944.765

After:
Minimum      90th         99th         Transaction
Latency      Percentile   Percentile   Rate
Microseconds Latency      Latency      Tran/s
             Microseconds Microseconds
146          238          266          4700.596

Signed-off-by: Pawel Chmielewski <pawel.chmielewski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>