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" <[e-mail]>
Cc: Michael Turquette <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Cc: Maxime Ripard <[e-mail]>
Cc: Chen-Yu Tsai <[e-mail]>
Cc: Jernej Skrabec <[e-mail]>
Cc: Boris BREZILLON <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Lee Jones <[e-mail]>
Acked-by: Stephen Boyd <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

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

···
 
 #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

···
 #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);
···
 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);
···
 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;
···
 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

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