qcacmn: add function for multi-pages memory zero operation

Add function qdf_mem_multi_pages_zero() to support multi-pages
memory zero operation.

Change-Id: I08b5c2722c02881550d3a1da27d5137c0957fd51
CRs-Fixed: 2776365

qdf/inc/qdf_mem.h

@@ -299,6 +299,18 @@ void qdf_mem_multi_pages_free(qdf_device_t osdev,
 
 #endif /* MEMORY_DEBUG */
 
+/**
+ * qdf_mem_multi_pages_zero() - zero out each page memory
+ * @pages: Multi page information storage
+ * @cacheable: Coherent memory or cacheable memory
+ *
+ * This function will zero out each page memory
+ *
+ * Return: None
+ */
+void qdf_mem_multi_pages_zero(struct qdf_mem_multi_page_t *pages,
+			      bool cacheable);
+
 /**
  * qdf_aligned_malloc() - allocates aligned QDF memory.
  * @size: Size to be allocated