meson: Enable the oem-ibm feature by default

Ensure the feature gets build coverage in CI, because people seem to
assume that's what's happening[1].

[1]: https://gerrit.openbmc.org/c/openbmc/pldm/+/62954

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: Id5e271357c66667d1fa01dda005956fe755114de
diff --git a/meson_options.txt b/meson_options.txt
index 5e7fb72..72ec1ec 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,6 +1,6 @@
 option('tests', type: 'feature', description: 'Build tests', value: 'enabled')
 option('oe-sdk', type: 'feature', description: 'Enable OE SDK')
-option('oem-ibm', type: 'feature', description: 'Enable IBM OEM PLDM')
+option('oem-ibm', type: 'feature', description: 'Enable IBM OEM PLDM', value: 'enabled')
 option('utilities', type: 'feature', description: 'Enable debug utilities', value: 'enabled')
 option('libpldmresponder', type: 'feature', description: 'Enable libpldmresponder', value: 'enabled')