ANDROID: 16K: __PAGE_ALIGN dma-bufs size from heap allocations

In order to avoid dma-buf mappings having unaligned end addresses,
__PAGE_ALIGN the buffer size at allocation time.

Bug: 383389337
Bug: 356729201
Change-Id: I4e59d1378f59138db9b58689e32e27ce9f43655c
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>

drivers/dma-buf/dma-heap.c

@@ -13,6 +13,7 @@
 #include <linux/err.h>
 #include <linux/list.h>
 #include <linux/nospec.h>
+#include <linux/page_size_compat.h>
 #include <linux/syscalls.h>
 #include <linux/uaccess.h>
 #include <linux/xarray.h>
@@ -91,7 +92,7 @@ struct dma_buf *dma_heap_buffer_alloc(struct dma_heap *heap, size_t len,
 	 * Allocations from all heaps have to begin
 	 * and end on page boundaries.
 	 */
-	len = PAGE_ALIGN(len);
+	len = __PAGE_ALIGN(len);
 	if (!len)
 		return ERR_PTR(-EINVAL);