Attach the vmci(4) man page to the build. Looks like it's been

missed by mistake.

MFC after:	2 weeks
Sponsored by:	DARPA, AFRL

share/man/man4/Makefile

@@ -546,6 +546,7 @@ MAN=	aac.4 \
 	${_virtio_console.4} \
 	${_virtio_random.4} \
 	${_virtio_scsi.4} \
+	${_vmci.4} \
 	vkbd.4 \
 	vlan.4 \
 	vxlan.4 \
@@ -821,6 +822,7 @@ _spkr.4=	spkr.4
 _tpm.4=		tpm.4
 _urtw.4=	urtw.4
 _viawd.4=	viawd.4
+_vmci.4=	vmci.4
 _wbwd.4=	wbwd.4
 _wpi.4=		wpi.4
 _xen.4=		xen.4