Use map_sysmem when accessing memory in setexpr

The setexpr command used to segfault when accessing memory in sandbox.
The pointer accesses should be mapped.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
1 file changed