Some SPI slave devices need a delay to digest write commands. (BMI160).
Add a 1ms delay in the write command.
BRANCH=smaug
BUG=none
TEST=Check on the logic analyzer that there is ~1.5ms delay between back
to back spixfer w ... commands.
Change-Id: I7cc6ed0da9ae39550e58457b9431eb01b5ab36d8
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/305379
Reviewed-by: Alec Berg <alecaberg@chromium.org>