usb: host: xhci: using correct specification chapter reference for DCBAAP

Using correct specification chapter reference for DCBAAP
(Device Context Base Address Array Pointer).
Signed-off-by: NPeter Chen <peter.chen@nxp.com>
Signed-off-by: NMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-mem.c

@@ -2431,7 +2431,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	writel(val, &xhci->op_regs->config_reg);
 
 	/*
-	 * Section 5.4.8 - doorbell array must be
+	 * xHCI section 5.4.6 - doorbell array must be
 	 * "physically contiguous and 64-byte (cache line) aligned".
 	 */
 	xhci->dcbaa = dma_alloc_coherent(dev, sizeof(*xhci->dcbaa), &dma,