MIPS: Octeon: Update DMA mapping operations for OCTEON II processors.

OCTEON II has a new dma to phys mapping method for PCIe.  Define
OCTEON_DMA_BAR_TYPE_PCIE2 to denote this case, and handle it.

OCTEON II also needs a swiotlb if the OHCI USB driver is enabled, so
allocate this too.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2983/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/include/asm/octeon/pci-octeon.h b/arch/mips/include/asm/octeon/pci-octeon.h
index fba2ba2..c66734b 100644
--- a/arch/mips/include/asm/octeon/pci-octeon.h
+++ b/arch/mips/include/asm/octeon/pci-octeon.h
@@ -56,7 +56,8 @@
 	OCTEON_DMA_BAR_TYPE_INVALID,
 	OCTEON_DMA_BAR_TYPE_SMALL,
 	OCTEON_DMA_BAR_TYPE_BIG,
-	OCTEON_DMA_BAR_TYPE_PCIE
+	OCTEON_DMA_BAR_TYPE_PCIE,
+	OCTEON_DMA_BAR_TYPE_PCIE2
 };
 
 /*