meta-yadro: vegman: fix ipmi-host append file

phosphor-ipmi-host was recently converted from autotools to meson,
but we miss the moment. Update recipe according new build flags.

Signed-off-by: Andrei Kartashev <a.kartashev@yadro.com>
Change-Id: I061f3093f9fe482328e4499c80d74b1a7112e019
diff --git a/meta-yadro/meta-vegman/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend b/meta-yadro/meta-vegman/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
index b549a7a..24192b5 100644
--- a/meta-yadro/meta-vegman/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
+++ b/meta-yadro/meta-vegman/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
@@ -3,6 +3,6 @@
 PACKAGECONFIG:append = " dynamic-sensors hybrid-sensors"
 
 DEPENDS:append= " vegman-yaml-config"
-EXTRA_OECONF= " \
-    SENSOR_YAML_GEN=${STAGING_DIR_HOST}${datadir}/vegman-yaml-config/ipmi-sensors-static.yaml \
+EXTRA_OEMESON= " \
+    -Dsensor-yaml-gen=${STAGING_DIR_HOST}${datadir}/vegman-yaml-config/ipmi-sensors-static.yaml \
     "