clk: tegra: make clk-tegra124-dfll-fcpu explicitly non-modular

The Kconfig currently controlling compilation of this code is:

arch/arm/mach-tegra/Kconfig:config ARCH_TEGRA_124_SOC
arch/arm/mach-tegra/Kconfig: bool "Enable support for Tegra124 family"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tags etc. since all that information
is already contained at the top of the file in the comments.

Cc: Peter De Schrijver <[e-mail]>
Cc: Prashant Gaikwad <[e-mail]>
Cc: Michael Turquette <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Cc: Stephen Warren <[e-mail]>
Cc: Thierry Reding <[e-mail]>
Cc: Alexandre Courbot <[e-mail]>
Cc: Aleksandr Frid <[e-mail]>
Cc: Paul Walmsley <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Paul Gortmaker <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

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

···
 #include <linux/cpu.h>
 #include <linux/err.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
+#include <linux/init.h>
 #include <linux/platform_device.h>
 #include <soc/tegra/fuse.h>
 
···
 	{ .compatible = "nvidia,tegra124-dfll", },
 	{ },
 };
-MODULE_DEVICE_TABLE(of, tegra124_dfll_fcpu_of_match);
 
 static const struct dev_pm_ops tegra124_dfll_pm_ops = {
 	SET_RUNTIME_PM_OPS(tegra_dfll_runtime_suspend,
···
 {
 	return platform_driver_register(&tegra124_dfll_fcpu_driver);
 }
-module_init(tegra124_dfll_fcpu_init);
-
-static void __exit tegra124_dfll_fcpu_exit(void)
-{
-	platform_driver_unregister(&tegra124_dfll_fcpu_driver);
-}
-module_exit(tegra124_dfll_fcpu_exit);
-
-MODULE_DESCRIPTION("Tegra124 DFLL clock source driver");
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Aleksandr Frid <[e-mail]>");
-MODULE_AUTHOR("Paul Walmsley <[e-mail]>");
+device_initcall(tegra124_dfll_fcpu_init);