google-ipmi-sys: Disable building tests

We don't yet use ptest so we are wasting cycles building tests

Change-Id: I44d51dd1655157f2cd96cd21d8e1122faa06f6a2
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-google/ipmi/google-ipmi-sys_git.bb b/meta-google/recipes-google/ipmi/google-ipmi-sys_git.bb
index 70c4bcb..0bcc66a 100644
--- a/meta-google/recipes-google/ipmi/google-ipmi-sys_git.bb
+++ b/meta-google/recipes-google/ipmi/google-ipmi-sys_git.bb
@@ -30,6 +30,8 @@
 SYSTEMD_PACKAGES = "${PN}"
 SYSTEMD_SERVICE_${PN} = "gbmc-psu-hardreset.target"
 
+EXTRA_OECONF += "--disable-tests"
+
 CXXFLAGS_append_gbmc = '${@"" if not d.getVar("GBMC_NCSI_IF_NAME") else \
   " -DNCSI_IPMI_CHANNEL=1 -DNCSI_IF_NAME=" + d.getVar("GBMC_NCSI_IF_NAME")}'