meta-fii: meta-kudo: phosphor-sel-logger: Use packageconfig

This makes it possible for us to change out build specific settings.

Change-Id: I86e0dd6b02373f6c6a0e1766e14510c468f9c06e
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-fii/meta-kudo/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend b/meta-fii/meta-kudo/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend
index 664ca59..3fffde0 100644
--- a/meta-fii/meta-kudo/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend
+++ b/meta-fii/meta-kudo/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend
@@ -1,2 +1 @@
-# Enable threshold monitoring
-EXTRA_OECMAKE_append_kudo = " -DSEL_LOGGER_MONITOR_THRESHOLD_EVENTS=ON"
+PACKAGECONFIG_append_kudo = " log-threshold"