kevin: bd99955: Enable power save mode.
kevin: bd99955: Enable power save mode.

The bug with USB data connection when the BD9995x power save mode is
enabled has been solved.
We can re-enable the low power mode to save energy.

BRANCH=gru
BUG=chrome-os-partner:57310, chrome-os-partner:57671
TEST=check that usb ethernet works after booting on kevin

Signed-off-by: Shawn Nematbakhsh <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/384833
Reviewed-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Tested-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Commit-Queue: Vincent Palatin <70a9964ec8fd10b0b08fcc8623c2add25ddf99ac@chromium.org>
(cherry picked from commit 55e3f995bd603842ca304b02f5be32c61a271137)

Change-Id: I7a58a339166ab01514b72a65f619d642f9eb057e
Reviewed-on: https://chromium-review.googlesource.com/388807
Commit-Ready: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Tested-by: Shawn N <5259333ce42e3ace6a73988cec7115ed9d3a661a@chromium.org>
Reviewed-by: Vincent Palatin <70a9964ec8fd10b0b08fcc8623c2add25ddf99ac@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec