cpufreq: ti-cpufreq: Use builtin_platform_driver()

This driver can not be built as a module and there is no need of the
platform driver unregister part. Use builtin_platform_driver() instead
of module_platform_driver().
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/ti-cpufreq.c

@@ -304,7 +304,7 @@ static struct platform_driver ti_cpufreq_driver = {
 		.name = "ti-cpufreq",
 	},
 };
-module_platform_driver(ti_cpufreq_driver);
+builtin_platform_driver(ti_cpufreq_driver);
 
 MODULE_DESCRIPTION("TI CPUFreq/OPP hw-supported driver");
 MODULE_AUTHOR("Dave Gerlach <d-gerlach@ti.com>");