ANDROID: virtio_balloon: Do not translate reported pages through DMA API

The free-page reporting and hinting queues do not pass arrays of page
addresses (like the basic inflate queue) but instead pass the free page
ranges as buffers. This does not work well with DMA API: The host wants
to know the GPA, not an IOVA.

For these two virtqueues, disable DMA API and pass through buffers untranslated.

Bug: 240239989
Change-Id: I2d13a8b7e8f6775819de7fe96f4579afa08b1300
Signed-off-by: Keir Fraser <keirf@google.com>