ahci_generic: add quirk for NXP0004 (NXP Layerscape LX2160A)

This fixes this error :
(aprobe3:ahcich3:0:15:0): NOP FLUSHQUEUE. ACB: 00 00 00 00 00 00 00 00 00 00 00 00
(aprobe3:ahcich3:0:15:0): CAM status: Command timeout
(aprobe3:ahcich3:0:15:0): Error 5, Retries exhausted

Submitted by: Greg V <greg@unrelenting.technology>
Reviewed by: imp, mav
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D25157