[U-Boot] [PATCH 5/5] cmd gpt: test in sandbox

[sjg at google.com]

From: Alison Chaiken <alison at peloton-tech.com>

Make minor changes to README.gpt and sandbox_defconfig to support
testing of the gpt command's functionality in the sandbox.

Signed-off-by: Alison Chaiken <alison at peloton-tech.com>
---
 doc/README.gpt | 10 ++++++++++
 1 file changed, 10 insertions(+)

Applied to u-boot-dm, thanks!