clk: tegra: dfll: Use builtin_platform_driver to simplify the code

Use the builtin_platform_driver() macro to make the code simpler.

Signed-off-by: Wei Yongjun <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/tegra/clk-tegra124-dfll-fcpu.c

···
 		.pm = &tegra124_dfll_pm_ops,
 	},
 };
-
-static int __init tegra124_dfll_fcpu_init(void)
-{
-	return platform_driver_register(&tegra124_dfll_fcpu_driver);
-}
-device_initcall(tegra124_dfll_fcpu_init);
+builtin_platform_driver(tegra124_dfll_fcpu_driver);