Reef: Fix power-up sequence for Anx3429
Reef: Fix power-up sequence for Anx3429

Power-up sequence must bring up PWR_NE followed by RESETN according
to Figure 5-16 of the datasheet.

BUG=chrome-os-partner:63045
BRANCH=none
TEST=Test charging, external monitor, usb flash drive in s0/s3/s5.

Change-Id: I0e69f0fd0a06f3c828ca59172e0ca045cdc4f5d7
Signed-off-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/445934
Reviewed-by: Kevin K Wong <8bf1d1ccd36a6bfde85ceaaa1fe52f2093ecf3aa@intel.com>
Reviewed-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>

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