fix(iscsi): don't require network setup for qedi

This adds the logic of cc2c48a ("fix(iscsi): don't require network setup
for bnx2i") for the qedi iSCSI offload driver. Testing has shown
that for qedi, network setup in the initrd is even more superfluous
as it is for bnx2i. qedi devices are usually separate PCI functions
that don't show up as ethernet interfaces at all.

While at it, simplify the conditional a bit.

Signed-off-by: Martin Wilck <mwilck@suse.com>

man/dracut.cmdline.7.asc

@@ -885,7 +885,7 @@ iscsistart -b --param node.session.timeo.replacement_timeout=30
     up iSCSI connections. This parameter indicates that network setup can be
     skipped in the initramfs, which makes booting with iSCSI offload cards
     faster and more reliable. This parameter currently only has an effect for
-    _<transport_name>=bnx2i_.
+    _<transport_name>=bnx2i_ or _<transport_name>=qedi_.
 
 FCoE
 ~~~~

modules.d/95iscsi/parse-iscsiroot.sh

@@ -79,8 +79,9 @@ fi
 
 # iscsi_firmware does not need argument checking
 if [ -n "$iscsi_firmware" ]; then
-    if [ "$root" != "dhcp" ] && [ "$netroot" != "dhcp" ]; then
-        [ -z "$netroot" ] && [ "$iscsi_transport" != bnx2i ] && netroot=iscsi:
+    if [ "$root" != "dhcp" ] && [ -z "$netroot" ] \
+        && [ "$iscsi_transport" != bnx2i ] && [ "$iscsi_transport" != qedi ]; then
+        netroot=iscsi:
     fi
     modprobe -b -q iscsi_boot_sysfs 2> /dev/null
     modprobe -b -q iscsi_ibft