meta-phosphor: obmc-inventory: rename as git

obmc-inventory receives its source from mrw-rev.bbclass which is
git-based.

(From meta-phosphor rev: edb73f7ae1ab59c60823ea9708c8efcd8ce0e580)

Change-Id: Icbfd238805e3f8f27c94068f76dbe6b25bf2b12f
Signed-off-by: Patrick Venture <venture@google.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-phosphor/inventory/obmc-inventory.bb b/meta-phosphor/recipes-phosphor/inventory/obmc-inventory_git.bb
similarity index 100%
rename from meta-phosphor/recipes-phosphor/inventory/obmc-inventory.bb
rename to meta-phosphor/recipes-phosphor/inventory/obmc-inventory_git.bb