net/ice/base: introduce and use for each bit iterator

net/ice/base: introduce and use for each bit iterator

A number of code flows iterate over a block of memory to do something
for every bit set in that memory. Use existing bit operations in a new
iterator macro to make those code flows cleaner.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>