Add missing description of 'custom_type_flag' structure member.

Fixes: e605fa9c4a0c ("clk: zynqmp: Add support for custom type flags")

Signed-off-by: Rajan Vaja <redacted>
---
Changes in v2:
  - Updated Fixes tag.
---
  drivers/clk/zynqmp/clk-zynqmp.h | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/clk/zynqmp/clk-zynqmp.h b/drivers/clk/zynqmp/clk-zynqmp.h
index 84fa80a..a3cd2f8 100644
--- a/drivers/clk/zynqmp/clk-zynqmp.h
+++ b/drivers/clk/zynqmp/clk-zynqmp.h

@@ -56,6 +56,7 @@ enum topology_type {
   * @type:	Type of topology
   * @flag:	Topology flags
   * @type_flag:	Topology type specific flag
+ * @custom_type_flag: Topology type specific custome flag