meta-phosphor: minor override syntax fixes

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia2b5197215351f321adc915f5a17b26f08e862b5
diff --git a/meta-phosphor/recipes-phosphor/mrw/mrw-api-native.bb b/meta-phosphor/recipes-phosphor/mrw/mrw-api-native.bb
index b8c311b..ef73bfa 100644
--- a/meta-phosphor/recipes-phosphor/mrw/mrw-api-native.bb
+++ b/meta-phosphor/recipes-phosphor/mrw/mrw-api-native.bb
@@ -17,6 +17,6 @@
 SRCREV = "${MRW_API_SRCREV}"
 
 do_install() {
-    install -d ${D}${PERLLIBDIRS_class-native}/site_perl/${PERLVERSION}/mrw
-    install -m 0755 scripts/Targets.pm ${D}${PERLLIBDIRS_class-native}/site_perl/${PERLVERSION}/mrw/Targets.pm
+    install -d ${D}${PERLLIBDIRS:class-native}/site_perl/${PERLVERSION}/mrw
+    install -m 0755 scripts/Targets.pm ${D}${PERLLIBDIRS:class-native}/site_perl/${PERLVERSION}/mrw/Targets.pm
 }