device_(manifest|matrix).xml -> vendor_*

Building device_manifest.xml or device_compatibility_matrix.xml only
builds vendor manifest / matrices, but not all device manifest /
matrices (e.g. vintf_fragments, ODM manifest, etc.). Make the name more
accurate.

Test: m check-vintf-all

Change-Id: Ib017507c421355263d53a9e5b357f169c77da36d