meta-inspur : use meson build for bmcweb

- This commit would switch and use the equivalent option
  that are supported my bmcweb meson build.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: I509c5f890ecb7bf82364da3131fea6d2a2cfb971
diff --git a/meta-fp5280g2/recipes-phosphor/bmcweb/bmcweb_%.bbappend b/meta-fp5280g2/recipes-phosphor/bmcweb/bmcweb_%.bbappend
index 934bb28..960a978 100644
--- a/meta-fp5280g2/recipes-phosphor/bmcweb/bmcweb_%.bbappend
+++ b/meta-fp5280g2/recipes-phosphor/bmcweb/bmcweb_%.bbappend
@@ -1,3 +1,3 @@
-EXTRA_OECMAKE_append = " \
-    -DBMCWEB_INSECURE_ENABLE_REDFISH_FW_TFTP_UPDATE=ON \
+EXTRA_OEMESON_append = " \
+    -Dinsecure-tftp-update=enabled \
     "