xhci: Move functions to cleanup MSI to xhci-pci

Move function to cleanup MSI from xhci.c to xhci-pci.c
This is to decouple PCI specific code from generic xhci code.

No functional changes, function is an exact copy

Signed-off-by: Josue David Hernandez Gutierrez <josue.d.hernandez.gutierrez@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230317154715.535523-13-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>