[PATCH 13/17] dm: sandbox: Create a new HOST uclass

[Simon Glass]

Sandbox supports block devices which can access files on the host machine.
At present there is no uclass for this. The devices are attached to the
root devic. The block-device type is therefore set to UCLASS_ROOT which
is confusing.

Block devices should be attached to a 'media' device instead, something
which handles access to the actual media and provides the block driver
for the block device.

Create a new uclass to handle this. It supports two operations, to attach
and detach a file on the host machine.

For now this is not fully plumbed in.

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

 drivers/block/Makefile      |   2 +-
 drivers/block/host-uclass.c | 176 ++++++++++++++++++++++++++++++++++++
 include/dm/uclass-id.h      |   1 +
 include/sandbox_host.h      | 125 +++++++++++++++++++++++++
 4 files changed, 303 insertions(+), 1 deletion(-)
 create mode 100644 drivers/block/host-uclass.c
 create mode 100644 include/sandbox_host.h

Applied to u-boot-dm, thanks!