net/ice/base: support not locking sideband queue

net/ice/base: support not locking sideband queue

For certain PTP clock adjustments, there is a use case for locking the
sideband queue at a higher level and performing an atomic series of
operations while the sideband queue is locked.  To accommodate this use
case, split ice_sw_send_cmd() into a version that takes the lock and a
version that does not.

Signed-off-by: Ben Shelton <benjamin.h.shelton@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>