usb: xhci: Define 'XHCI_MAX_HALT_USEC' macro only once

Right now xhci header file defines XHCI_MAX_HALT_USEC macro
twice. Fix the same.

Cc: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Reviewed-by: Marek Vasut <marex@denx.de>
1 file changed