[U-Boot] [PATCH 02/15] sandbox: Support file truncation with os_open()

[sjg at google.com]

At present files are not truncated on writing. This is a useful feature.
Add support for this.

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

 arch/sandbox/cpu/os.c | 2 ++
 include/os.h          | 1 +
 2 files changed, 3 insertions(+)

Applied to u-boot-dm