add maintainers to ibm oem designs

The IBM team has begun working on their next system design which entails
a few IBM-specific functions. These will be stored under the
designs/oem/ibm/ sub-directory. The hope is that by making these designs
public, there will be potential for collaboration in the future with
other companies that have similar requirements.

Add AndrewJ, AndrewG, and Gunnar as maintainers of these docs from IBM.

Change-Id: I855795d76229293e071f76084f174ca834e1009d
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/designs/oem/ibm/OWNERS b/designs/oem/ibm/OWNERS
new file mode 100644
index 0000000..3d80a72
--- /dev/null
+++ b/designs/oem/ibm/OWNERS
@@ -0,0 +1,52 @@
+# OWNERS
+# ------
+#
+# The OWNERS file maintains the list of individuals responsible for various
+# parts of this repository, including code review and approval.  We use the
+# Gerrit 'owners' plugin, which consumes this file, along with some extra
+# keywords for our own purposes and tooling.
+#
+# For details on the configuration used by 'owners' see:
+#  https://gerrit.googlesource.com/plugins/owners/+/refs/heads/master/owners/src/main/resources/Documentation/config.md
+#
+# An OWNERS file must be in the root of a repository but may also be present
+# in any subdirectory.  The contents of the subdirectory OWNERS file are
+# combined with parent directories unless 'inherit: false' is set.
+#
+# The owners file is YAML and has [up to] 4 top-level keywords.
+#   * owners: A list of individuals who have approval authority on the
+#     repository.
+#
+#   * reviewers: A list of individuals who have requested review notification
+#     on the repository.
+#
+#   * matchers: A list of specific file/path matchers for granular 'owners' and
+#     'reviewers'.  See 'owners' plugin documentation.
+#
+#   * openbmc: A list of openbmc-specific meta-data about owners and reviewers.
+#     - name: preferred name of the individual.
+#     - email: preferred email address of the individual.
+#     - discord: Discord nickname of the individual.
+#
+# It is expected that these 4 sections will be listed in the order above and
+# data within them will be kept sorted.
+
+owners:
+- andrew@aj.id.au
+- geissonator@yahoo.com
+- gmills@linux.vnet.ibm.com
+
+reviewers:
+
+matchers:
+
+openbmc:
+- name: Andrew Jeffery
+  email: andrew@aj.id.au
+  discord: arj
+- name: Andrew Geissler
+  email: geissonator@yahoo.com
+  discord: geissonator
+- name: Gunnar Mills
+  email: gmills@linux.vnet.ibm.com
+  discord: GunnarM