clk: rockchip: Demote non-conformant kernel-doc headers in main clock code

clk: rockchip: Demote non-conformant kernel-doc headers in main clock code

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

 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'name' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'parent_names' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'num_parents' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'base' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'muxdiv_offset' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'mux_shift' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'mux_width' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'mux_flags' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'div_offset' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'div_shift' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'div_width' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'div_flags' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'div_table' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'gate_offset' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'gate_shift' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'gate_flags' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'flags' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:45: warning: Function parameter or member 'lock' not described in 'rockchip_clk_register_branch'
 drivers/clk/rockchip/clk.c:180: warning: Function parameter or member 'hw' not described in 'rockchip_fractional_approximation'
 drivers/clk/rockchip/clk.c:180: warning: Function parameter or member 'rate' not described in 'rockchip_fractional_approximation'
 drivers/clk/rockchip/clk.c:180: warning: Function parameter or member 'parent_rate' not described in 'rockchip_fractional_approximation'
 drivers/clk/rockchip/clk.c:180: warning: Function parameter or member 'm' not described in 'rockchip_fractional_approximation'
 drivers/clk/rockchip/clk.c:180: warning: Function parameter or member 'n' not described in 'rockchip_fractional_approximation'

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Xing Zheng <zhengxing@rock-chips.com>
Cc: Thomas Abraham <thomas.ab@samsung.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rockchip@lists.infradead.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210120093040.1719407-2-lee.jones@linaro.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>