ifconfig: Display the IFCAP_HWSTATS capability

This follows the commit 4cdc1f5, which introduces the IFCAP_HWSTATS
capability.

This is a direct commit to stable/13.

Fixes:	4cdc1f5 There are some high performance NICs that count statistics in hardware

Author: gmshake

sbin/ifconfig/ifconfig.c

@@ -1398,8 +1398,8 @@ unsetifdescr(const char *val, int value, int s, const struct afswtch *afp)
 "\020\1RXCSUM\2TXCSUM\3NETCONS\4VLAN_MTU\5VLAN_HWTAGGING\6JUMBO_MTU\7POLLING" \
 "\10VLAN_HWCSUM\11TSO4\12TSO6\13LRO\14WOL_UCAST\15WOL_MCAST\16WOL_MAGIC" \
 "\17TOE4\20TOE6\21VLAN_HWFILTER\23VLAN_HWTSO\24LINKSTATE\25NETMAP" \
-"\26RXCSUM_IPV6\27TXCSUM_IPV6\31TXRTLMT\32HWRXTSTMP\33MEXTPG\34TXTLS4\35TXTLS6" \
-"\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT"
+"\26RXCSUM_IPV6\27TXCSUM_IPV6\30HWSTATS\31TXRTLMT\32HWRXTSTMP\33MEXTPG" \
+"\34TXTLS4\35TXTLS6\36VXLAN_HWCSUM\37VXLAN_HWTSO\40TXTLS_RTLMT"
 
 /*
  * Print the status of the interface.  If an address family was