[U-Boot] [PATCH v2 16/22] dm: sandbox: sound: Convert to use driver model

[sjg at google.com]

Update sandbox's device tree and config to use driver model for sound. Use
the double buffer for sound output so that we don't need to wait for the
sound to complete before returning.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v2:
- Add new patch to convert sandbox to use driver model

 arch/sandbox/cpu/sdl.c         | 36 ++++++++++++++++++++++------------
 arch/sandbox/dts/sandbox.dts   | 21 ++++++++++++++++++++
 arch/sandbox/include/asm/sdl.h |  8 ++++++++
 3 files changed, 53 insertions(+), 12 deletions(-)

Applied to u-boot-dm/master