Add a new RNG backend using QEMU builtin getrandom function.

This patch applies on top of
    "[PATCH v6 00/24] Add qemu_getrandom and ARMv8.5-RNG etc"
Based-on: 20190510173049.28171-1-richard.henderson@linaro.org

v4: update PATCH 1 commit message

v3: Include Kashyap's patch in the series
    Add a patch to change virtio-rng default backend to rng-builtin

v2: Update qemu-options.hx
    describe the new backend and specify virtio-rng uses the
    rng-random by default

Kashyap Chamarthy (1):
  VirtIO-RNG: Update default entropy source to `/dev/urandom`

Laurent Vivier (2):
  rng-builtin: add an RNG backend that uses qemu_guest_getrandom()
  virtio-rng: change default backend to rng-builtin

 backends/Makefile.objs         |  2 +-
 backends/rng-builtin.c         | 54 ++++++++++++++++++++++++++++++++++
 backends/rng-random.c          |  2 +-
 hw/virtio/virtio-rng.c         |  2 +-
 include/hw/virtio/virtio-rng.h |  4 +--
 include/sysemu/rng-builtin.h   | 17 +++++++++++
 qemu-options.hx                |  9 +++++-
 7 files changed, 84 insertions(+), 6 deletions(-)
 create mode 100644 backends/rng-builtin.c
 create mode 100644 include/sysemu/rng-builtin.h

-- 
2.20.1