udev/rules: add by-path and by-ibdev links to infiniband verbs

The uverbs devices are sequentially numbered and are not guarranteed to
stay stable across reboot.

At least one good person was disappointed by this, because they couldn't
find their device: https://bugzilla.redhat.com/show_bug.cgi?id=2036515

Let's add a few helpful links.

Author: lkundrak

rules.d/60-infiniband.rules

@@ -0,0 +1,12 @@
+# do not edit this file, it will be overwritten on update
+
+ACTION=="remove", GOTO="infiniband_end"
+SUBSYSTEM!="infiniband_verbs", GOTO="infiniband_end"
+KERNEL!="uverbs*", GOTO="infiniband_end"
+
+IMPORT{builtin}="path_id"
+
+ENV{ID_PATH}=="?*", SYMLINK+="infiniband/by-path/$env{ID_PATH}"
+ATTR{ibdev}=="?*", SYMLINK+="infiniband/by-ibdev/uverbs-$attr{ibdev}"
+
+LABEL="infiniband_end"