prov/efa: Update lttng directions, specify glibc version requirement

[a-szegel]

No description provided.

[darrylabbate]

You can just add glibc >= 2.28 to the Prerequisites section of the doc (glib2-devel on AL2). The outdated glibc on AL2 is a common issue.

[shijin-aws]

should this be part of the prerequisites?

[darrylabbate]

Out of scope, but I should probably just add my build script for LTTng 2.13+ and Babeltrace 2 as a "quick start." LTTng >= 2.13 can be easily installed via the system package manager for most relevant distros, but there are exceptions like AL2.

[a-szegel]

These seem to be non-AL2 specific.

[darrylabbate]

• Provide a link or remove the link formatting.
• Use the generic names for the packages. glib2-devel and elfutils-devel are specific to yum.
• Babeltrace2's dependency is pedantically GLib, not glibc (ref)
• I would also recommend moving these to the section on Babeltrace2, since it's not a hard requirement for LTTng-UST (i.e. you can analyze LTTng traces using other tools, like Trace Compass)

Suggested change

	* [glib2-devel] (glibc 2.28 is required for babeltrace2)
	* [elfutils-devel] (required for babeltrace2)
	* [GLib](https://developer.gnome.org/glib/) >= 2.28
	* [elfutils](https://sourceware.org/elfutils/) >= 0.154

[darrylabbate]

These seem to be non-AL2 specific.

The dependencies themselves are not specific to AL2. My point was that the package manager will resolve them for you - AL2 being kind of an outlier since LTTng 2.13 isn't available via yum. It's only tangentially relevant to this PR.