fix(enable-spdk): extend check for IOMMU support (backport #582)

[mergify]

Which issue(s) this PR fixes:

Issue longhorn/longhorn#12076

What this PR does / why we need it:

Adds a check for IOMMU support to preflight --enable-spdk

Special notes for your reviewer:

Additional documentation or context

---

This is an automatic backport of pull request #582 done by [Mergify](https://mergify.com).

[codecov]

Codecov Report

❌ Patch coverage is 4.82759% with 414 lines in your changes missing coverage. Please review.
✅ Project coverage is 3.32%. Comparing base (e03bd2c) to head (e7bf389).

Files with missing lines	Patch %	Lines
...l/preflight/packagemanager/mocks/PackageManager.go	0.00%	413 Missing ⚠️
pkg/local/preflight/checker.go	95.45%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           v1.13.x    #590      +/-   ##
==========================================
+ Coverage     3.14%   3.32%   +0.18%     
==========================================
  Files           42      43       +1     
  Lines         3629    4064     +435     
==========================================
+ Hits           114     135      +21     
- Misses        3512    3926     +414     
  Partials         3       3              

Flag	Coverage Δ
unittests	3.32% <4.82%> (+0.18%)	⬆️

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