Add DMA support for glMapBufferRange

Bug: 116046430
Test: run antutu and 3dmark
Change-Id: I3f204bac889d75cdeba21fd88f0920c04c5d589a
Signed-off-by: Roman Kiryanov <rkir@google.com>
diff --git a/shared/OpenglCodecCommon/goldfish_dma.h b/shared/OpenglCodecCommon/goldfish_dma.h
index 1350ace..db1e8d6 100644
--- a/shared/OpenglCodecCommon/goldfish_dma.h
+++ b/shared/OpenglCodecCommon/goldfish_dma.h
@@ -36,6 +36,6 @@
                         uint32_t sz);
 
 void goldfish_dma_free(goldfish_dma_context* cxt);
-uint64_t goldfish_dma_guest_paddr(struct goldfish_dma_context* cxt);
+uint64_t goldfish_dma_guest_paddr(const struct goldfish_dma_context* cxt);
 
 #endif