[Patch] MIPS: Add missing calls to plat_unmap_dma_mem.

[David Daney <ddaney@caviumnetworks.com>]

It appears that dma_free_noncoherent() and dma_free_coherent() are
missing calls to plat_unmap_dma_mem().  This patch adds them.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
---
This is split out from my OCTEON processor support patch at Ralf's
request.

 arch/mips/mm/dma-default.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index 5b98d0e..e6708b3 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -111,6 +111,7 @@ EXPORT_SYMBOL(dma_alloc_coherent);
 void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
 	dma_addr_t dma_handle)
 {
+	plat_unmap_dma_mem(dma_handle);
 	free_pages((unsigned long) vaddr, get_order(size));
 }
 
@@ -121,6 +122,8 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 {
 	unsigned long addr = (unsigned long) vaddr;
 
+	plat_unmap_dma_mem(dma_handle);
+
 	if (!plat_device_is_coherent(dev))
 		addr = CAC_ADDR(addr);