netmap: Avoid HW errors when using pipes

[jlucovsky]

Issue: 6837

When using netmap pipes (with lb, for example), avoid direct hardware related IOCTLs that will fail (not supported with pipes).

Link to redmine ticket: 6837

Describe changes:

• Skip ioctl to obtain the HW ring count when not using a "real" device

Provide values to any of the below to override the defaults.

To use a pull request use a branch name like pr/N where N is the
pull request number.

Alternatively, SV_BRANCH may also be a link to an
OISF/suricata-verify pull-request.

SV_REPO=
SV_BRANCH=
SU_REPO=
SU_BRANCH=
LIBHTP_REPO=
LIBHTP_BRANCH=

[jlucovsky]

Continued in #10589