Link is the only platform that uses smart usb ports. Link's board.h defines
USB_CHARGE_PORT_COUNT, yet the usb_port_power_smart.c file is peppered with
assumptions that that constant is always 2.
This moves the constant into usb_port_power_smart.c where it belongs.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=manual
make runtests
Code refactoring only, no visible changes,
Change-Id: Id45e11d88585a98348105b1399c7e18c554add50
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/171565
Reviewed-by: Randall Spangler <rspangler@chromium.org>