MIPS: Netlogic: Fix USB block's coherent DMA mask

The on-chip USB controller on Netlogic XLP does not suppport
DMA beyond 32-bit physical address. Set the coherent_dma_mask
of the USB in its PCI fixup to support this.

Signed-off-by: Ganesan Ramalingam <[e-mail]>
Signed-off-by: Jayachandran C. <[e-mail]>
Cc: [e-mail]
Patchwork: https://patchwork.linux-mips.org/patch/5596/
Signed-off-by: Ralf Baechle <[e-mail]>

arch/mips/netlogic/xlp/usb-init.c

···
 static void nlm_usb_fixup_final(struct pci_dev *dev)
 {
 	dev->dev.dma_mask		= &xlp_usb_dmamask;
-	dev->dev.coherent_dma_mask	= DMA_BIT_MASK(64);
+	dev->dev.coherent_dma_mask	= DMA_BIT_MASK(32);
 	switch (dev->devfn) {
 	case 0x10:
 		dev->irq = PIC_EHCI_0_IRQ;