clk: sunxi: Demote non-conformant kernel-doc headers

Headers must describe their parameters.

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

 drivers/clk/sunxi/clk-sun9i-core.c:27: warning: Function parameter or member 'req' not described in 'sun9i_a80_get_pll4_factors'
 drivers/clk/sunxi/clk-sun9i-core.c:100: warning: Function parameter or member 'req' not described in 'sun9i_a80_get_gt_factors'
 drivers/clk/sunxi/clk-sun9i-core.c:155: warning: Function parameter or member 'req' not described in 'sun9i_a80_get_ahb_factors'
 drivers/clk/sunxi/clk-sun9i-core.c:235: warning: Function parameter or member 'req' not described in 'sun9i_a80_get_apb1_factors'
 drivers/clk/sunxi/clk-usb.c:22: warning: cannot understand function prototype: 'struct usb_reset_data '
 drivers/clk/sunxi/clk-sun6i-ar100.c:26: warning: Function parameter or member 'req' not described in 'sun6i_get_ar100_factors'

Cc: "Emilio López" <emilio@elopez.com.ar>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Cc: Boris BREZILLON <boris.brezillon@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210303142430.3168703-1-lee.jones@linaro.org

drivers/clk/sunxi/clk-sun6i-ar100.c

@@ -16,7 +16,7 @@
 
 #include "clk-factors.h"
 
-/**
+/*
  * sun6i_get_ar100_factors - Calculates factors p, m for AR100
  *
  * AR100 rate is calculated as follows

drivers/clk/sunxi/clk-sun9i-core.c

@@ -14,7 +14,7 @@
 #include "clk-factors.h"
 
 
-/**
+/*
  * sun9i_a80_get_pll4_factors() - calculates n, p, m factors for PLL4
  * PLL4 rate is calculated as follows
  * rate = (parent_rate * n >> p) / (m + 1);
@@ -90,7 +90,7 @@ static void __init sun9i_a80_pll4_setup(struct device_node *node)
 CLK_OF_DECLARE(sun9i_a80_pll4, "allwinner,sun9i-a80-pll4-clk", sun9i_a80_pll4_setup);
 
 
-/**
+/*
  * sun9i_a80_get_gt_factors() - calculates m factor for GT
  * GT rate is calculated as follows
  * rate = parent_rate / (m + 1);
@@ -145,7 +145,7 @@ static void __init sun9i_a80_gt_setup(struct device_node *node)
 CLK_OF_DECLARE(sun9i_a80_gt, "allwinner,sun9i-a80-gt-clk", sun9i_a80_gt_setup);
 
 
-/**
+/*
  * sun9i_a80_get_ahb_factors() - calculates p factor for AHB0/1/2
  * AHB rate is calculated as follows
  * rate = parent_rate >> p;
@@ -225,7 +225,7 @@ static void __init sun9i_a80_apb0_setup(struct device_node *node)
 CLK_OF_DECLARE(sun9i_a80_apb0, "allwinner,sun9i-a80-apb0-clk", sun9i_a80_apb0_setup);
 
 
-/**
+/*
  * sun9i_a80_get_apb1_factors() - calculates m, p factors for APB1
  * APB1 rate is calculated as follows
  * rate = (parent_rate >> p) / (m + 1);

drivers/clk/sunxi/clk-usb.c

@@ -15,7 +15,7 @@
 #include <linux/spinlock.h>
 
 
-/**
+/*
  * sunxi_usb_reset... - reset bits in usb clk registers handling
  */