clk: bcm: clk-iproc-pll: Demote kernel-doc abuse

Fixes the following W=1 kernel build warning(s):

 drivers/clk/bcm/clk-iproc-pll.c:712: warning: Function parameter or member 'pll' not described in 'iproc_pll_sw_cfg'

Cc: Michael Turquette <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: Ray Jui <[email protected]>
Cc: Scott Branden <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Lee Jones <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stephen Boyd <[email protected]>

Author: Lee Jones

drivers/clk/bcm/clk-iproc-pll.c

@@ -704,7 +704,7 @@ static const struct clk_ops iproc_clk_ops = {
 	.set_rate = iproc_clk_set_rate,
 };
 
-/**
+/*
  * Some PLLs require the PLL SW override bit to be set before changes can be
  * applied to the PLL
  */