net/ice/base: cleanup misleading comment
net/ice/base: cleanup misleading comment

The maximum Admin Queue buffer size and NVM shadow RAM sector size are
both 4 Kilobytes. Some comments refer to those as 4Kb which can be
confused with 4 Kilobits.
Update the comments to use the commonly used KB symbol instead.

Signed-off-by: Bruce Allan <9ca9a0356a10eed24a8d9ec38dc19d9cd20ba07b@intel.com>
Signed-off-by: Qi Zhang <9e9e58ffa71a29bb7b87766b362515be648fcbe0@intel.com>
Acked-by: Qiming Yang <6f20802c8a43e38f9b475618bd31b5b1ac8c8656@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk