meta-openpower: move bmcweb bbappend

Upstream bmcweb is in recipes-phosphor/interfaces, not
recipes-phosphor/bmcweb.  Move to match.

(From meta-openpower rev: 7e685d7edb9e030217d4980aac7397102e0e3fa1)

Change-Id: I04735e31b4f983a15bd07a1dfef5651e6b2d08b6
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openpower/recipes-phosphor/bmcweb/bmcweb_%.bbappend b/meta-openpower/recipes-phosphor/interfaces/bmcweb_%.bbappend
similarity index 100%
rename from meta-openpower/recipes-phosphor/bmcweb/bmcweb_%.bbappend
rename to meta-openpower/recipes-phosphor/interfaces/bmcweb_%.bbappend