cma: use MEMBLOCK_ALLOC_ANYWHERE for placing CMA regions

MEMBLOCK_ALLOC_ANYWHERE allocates blocks from anywhere,
including highmem. Use this flag to allow CMA regions to
be placed in highmem as opposed to lowmem.

Change-Id: Id5fa36a96e46d60f0e898d764a1f4c8a0a37f5f8
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>

drivers/base/dma-contiguous.c

@@ -224,7 +224,7 @@ int __init cma_fdt_scan(unsigned long node, const char *uname,
 
 	pr_info("Found %s, memory base %lx, size %ld MiB\n", uname,
 		(unsigned long)base, (unsigned long)size / SZ_1M);
-	dma_contiguous_reserve_area(size, &base, 0, name);
+	dma_contiguous_reserve_area(size, &base, MEMBLOCK_ALLOC_ANYWHERE, name);
 
 	return 0;
 }