LinuxKPI list updates:
- Add some new hlist macros.
- Update existing hlist macros removing the need for a temporary iteration variable.
- Properly define the RCU hlist macros to be SMP safe with regard to RCU.
- Safe list macro arguments by adding a pair of parentheses.
- Prefix the _list_add() and _list_splice() functions with "linux" to reflect they are LinuxKPI internal functions.
Obtained from: Linux
MFC after: 1 week
Sponsored by: Mellanox Technologies