clk: rockchip: use module_platform_driver_probe

Replace builtin_platform_driver_probe with module_platform_driver_probe
because that rk3399 and rk3568 can be built as kernel modules.

Fixes: 70d839e2 ("clk: rockchip: rk3399: Support module build")
Fixes: cf911d89 ("clk: rockchip: add clock controller for rk3568")
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Stephen Boyd <sboyd@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20210904152856.31946-1-miles.chen@mediatek.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>