clk: sunxi: clk-sunxi: Demote a bunch of non-conformant kernel-doc headers

clk: sunxi: clk-sunxi: Demote a bunch of non-conformant kernel-doc headers

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

 drivers/clk/sunxi/clk-sunxi.c:34: warning: Function parameter or member 'req' not described in 'sun4i_get_pll1_factors'
 drivers/clk/sunxi/clk-sunxi.c:81: warning: Function parameter or member 'req' not described in 'sun6i_a31_get_pll1_factors'
 drivers/clk/sunxi/clk-sunxi.c:158: warning: Function parameter or member 'req' not described in 'sun8i_a23_get_pll1_factors'
 drivers/clk/sunxi/clk-sunxi.c:202: warning: Function parameter or member 'req' not described in 'sun4i_get_pll5_factors'
 drivers/clk/sunxi/clk-sunxi.c:229: warning: Function parameter or member 'req' not described in 'sun6i_a31_get_pll6_factors'
 drivers/clk/sunxi/clk-sunxi.c:250: warning: Function parameter or member 'req' not described in 'sun5i_a13_get_ahb_factors'
 drivers/clk/sunxi/clk-sunxi.c:289: warning: Function parameter or member 'req' not described in 'sun6i_get_ahb1_factors'
 drivers/clk/sunxi/clk-sunxi.c:328: warning: Function parameter or member 'req' not described in 'sun6i_ahb1_recalc'
 drivers/clk/sunxi/clk-sunxi.c:346: warning: Function parameter or member 'req' not described in 'sun4i_get_apb1_factors'
 drivers/clk/sunxi/clk-sunxi.c:385: warning: Function parameter or member 'req' not described in 'sun7i_a20_get_out_factors'
 drivers/clk/sunxi/clk-sunxi.c:415: warning: cannot understand function prototype: 'const struct clk_factors_config sun4i_pll1_config = '
 drivers/clk/sunxi/clk-sunxi.c:724: warning: cannot understand function prototype: 'struct div_data '
 drivers/clk/sunxi/clk-sunxi.c:945: warning: Function parameter or member 'node' not described in 'sunxi_divs_clk_setup'
 drivers/clk/sunxi/clk-sunxi.c:945: warning: Function parameter or member 'data' not described in 'sunxi_divs_clk_setup'

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: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210120093040.1719407-15-lee.jones@linaro.org