qcacmn: Add QDF abstraction for dmac_inv_range

Add qdf wrapper for function dmac_inv_range. This
invalidates the specified virtual address range.

Change-Id: Ia3f92cb5136dbdbfea1e9cda8a52b474456a4e0a
CRs-Fixed: 2634679

qdf/inc/qdf_nbuf.h

@@ -934,6 +934,19 @@ qdf_nbuf_sync_for_cpu(qdf_device_t osdev, qdf_nbuf_t buf, qdf_dma_dir_t dir)
 	__qdf_nbuf_sync_for_cpu(osdev, buf, dir);
 }
 
+/**
+ * qdf_nbuf_dma_inv_range() - Invalidate the specified virtual address range
+ * @buf_start: start address
+ * @buf_end: end address
+ *
+ * Return: none
+ */
+static inline void
+qdf_nbuf_dma_inv_range(const void *buf_start, const void *buf_end)
+{
+	__qdf_nbuf_dma_inv_range(buf_start, buf_end);
+}
+
 static inline int qdf_nbuf_get_num_frags(qdf_nbuf_t buf)
 {
 	return __qdf_nbuf_get_num_frags(buf);