usb: xhci: move roothub port limit validation

usb: xhci: move roothub port limit validation

Function xhci_setup_port_arrays() limits the number of roothub ports
for both USB 2 and 3, this causes code repetition.

Solve this by moving roothub port limits validation to
xhci_create_rhub_port_array().

Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-24-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>