VMCI: dma dg: detect DMA datagram capability

VMCI: dma dg: detect DMA datagram capability

BugLink: https://bugs.launchpad.net/bugs/1978145
Detect the VMCI DMA datagram capability, and if present, ack it
to the device.

Reviewed-by: Vishnu Dasa <vdasa@vmware.com>
Signed-off-by: Jorgen Hansen <jhansen@vmware.com>
Link: https://lore.kernel.org/r/20220207102725.2742-4-jhansen@vmware.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit eed2298d936087a1c85e0fa6f7170028e4f4fded)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Khaled Elmously <khalid.elmously@canonical.com>
Acked-by: Cengiz Can <cengiz.can@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>