Update MAINTAINERS, add OWNERS

Replace IRC with Discord since the community doesn't use IRC anymore.
Update discord name for Matt and George.

Add Brandon as Reviewer, he's written much of the next generation power
code (phosphor-power-supply) including psu monitoring and gpio handling.

The OWNERS file allows gerrit to automatically CC the owners on a review
when it's pushed, removing the need to add maintainers manually.

Eventually the MAINTAINERS file can be deprecated. For now keep both
until it's removed project-wide in openbmc.

Change-Id: I8804f653fe4722f4a821d78ad9516e2f7f18b9e6
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 4595d05..95f65fe 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14,7 +14,7 @@
 
     Section entries are structured according to the following scheme:
 
-    X:  NAME <EMAIL_USERNAME@DOMAIN> <IRC_USERNAME!>
+    X:  NAME <EMAIL_USERNAME@DOMAIN> <DISCORD_USERNAME!>
     X:  ...
     .
     .
@@ -24,10 +24,10 @@
     organization; FILE_PATH is a file path within the repository, possibly with
     wildcards; X is a tag of one of the following types:
 
-    M:  Denotes maintainer; has fields NAME <EMAIL_USERNAME@DOMAIN> <IRC_USERNAME!>;
+    M:  Denotes maintainer; has fields NAME <EMAIL_USERNAME@DOMAIN> <DISCORD_USERNAME!>;
         if omitted from an entry, assume one of the maintainers from the
         MAINTAINERS entry.
-    R:  Denotes reviewer; has fields NAME <EMAIL_USERNAME@DOMAIN> <IRC_USERNAME!>;
+    R:  Denotes reviewer; has fields NAME <EMAIL_USERNAME@DOMAIN> <DISCORD_USERNAME!>;
         these people are to be added as reviewers for a change matching the repo
         path.
     F:  Denotes forked from an external repository; has fields URL.
@@ -42,6 +42,7 @@
 START OF MAINTAINERS LIST
 -------------------------
 
-M:  Matt Spinler <spinler@us.ibm.com> <mspinler[m]!>
+M:  Matt Spinler <spinler@us.ibm.com> <mspinler!>
 M:  Shawn McCarney <shawnmm@us.ibm.com> <ShawnMcCarney!>
-R:  George Liu <liuxiwei@inspur.com> <liuxiwei!>
+R:  George Liu <liuxiwei@inspur.com> <George Liu!>
+R:  B.J. Wyman <bjwyman@gmail.com> <bjwyman!>