Add Ed as a maintainer

Patrick reached out to me with a desire to get more depth in
maintainership on phosphor-pid-control, so here I am.  I have very few
patchsets against PPC, but I maintain a lot of components around it, so
I'm happy to help, and I understand the form and function pretty well.

I really would've preferred pulling a sword from a stone, or been given a
2 factor encryption key by the lady of the lake, but as monty python
says "strange women lying in ponds distributing swords is no basis for a
system of government. Supreme executive power derives from a mandate
from the masses, not from some farcical aquatic ceremony."

As such, I submit this to the masses for approval.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Iaac047efd504dc100bcf9d2eec0dd7c77e3f1674
diff --git a/MAINTAINERS b/MAINTAINERS
index bcea0d6..71692ee 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -44,3 +44,4 @@
 
 M:  Patrick Venture <venture@google.com> <venture!>
 M:  Josh Lehan <krellan@google.com> <krellan!>
+M:  Ed Tanous <edtanous@google.com> <edtanous!>