clk: fixed: add missing kerneldoc

Add missing kerneldoc to fix compile warnings like:

  drivers/clk/clk-fixed-factor.c:211: warning: Function parameter or member 'node' not described in 'of_fixed_factor_clk_setup'

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200916161740.14173-2-krzk@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index 8b343e5..910e6e7 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -206,6 +206,7 @@ static struct clk_hw *_of_fixed_factor_clk_setup(struct device_node *node)
 
 /**
  * of_fixed_factor_clk_setup() - Setup function for simple fixed factor clock
+ * @node:	device node for the clock
  */
 void __init of_fixed_factor_clk_setup(struct device_node *node)
 {