When kunit is enabled, export the is_from_pool() helper function so it
can be used to check whether the allocations are from DMA pools.

Signed-off-by: Samiullah Khawaja <skhawaja@google.com>
---
 kernel/dma/pool.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/dma/pool.c b/kernel/dma/pool.c
index d1a0bb03e478..78496568973f 100644
--- a/kernel/dma/pool.c
+++ b/kernel/dma/pool.c
@@ -3,6 +3,9 @@
  * Copyright (C) 2012 ARM Ltd.
  * Copyright (C) 2020 Google LLC
  */
+
+#include <kunit/visibility.h>
+
 #include <linux/cma.h>
 #include <linux/debugfs.h>
 #include <linux/dma-map-ops.h>
@@ -320,3 +323,4 @@ bool dma_is_from_pool(void *start, size_t size)
 
 	return false;
 }
+EXPORT_SYMBOL_IF_KUNIT(dma_is_from_pool);
-- 
2.55.0.795.g602f6c329a-goog