Ensure lshw output is always listified

lshw changed the output of -xml between B.02.19 and B.02.20, in commit
2b1c730b493d647bbab4854713571458e82a81e7
(https://ezix.org/src/pkg/lshw/commit/2b1c730b493d647bbab4854713571458e82a81e7).
This commit seems to try to fix the JSON output but in doing so sets
`disable("output:list")` in main. This was feature/setting was being
used by the code in hwNode::asXML.

It seems that options are default enabled and thus we were getting the
xml data listified. When the output:list was disabled in that commit we
stopped getting listified xml. I have verified that we can enable the
option by passing it in the cli args as `-enable output:list`.

Signed-off-by: Manuel Mendez <github@i.m.mmlb.dev>

Author: mmlb

packethardware/utils.py

@@ -296,7 +296,9 @@ def get_megaraid_prop(prop):
 
 def lshw():
     # Workaround for x.large.arm: Skip framebuffer test ("-disable fb")
-    return cmd_output("lshw", "-xml", "-quiet", "-disable", "fb")
+    return cmd_output(
+        "lshw", "-xml", "-quiet", "-disable", "fb", "-enable", "output:list"
+    )
 
 
 def lspci(pci_id):