platform/x86: thinkpad_acpi: Replace ifdef CONFIG_ACPI_PLATFORM_PROFILE with depends on

With the #if IS_ENABLED(CONFIG_ACPI_PLATFORM_PROFILE), we get the following
errors when thinkpad_acpi is builtin while CONFIG_ACPI_PLATFORM_PROFILE=m :

drivers/platform/x86/thinkpad_acpi.c:10186: undefined reference to `platform_profile_notify'
drivers/platform/x86/thinkpad_acpi.c:10226: undefined reference to `platform_profile_register'
drivers/platform/x86/thinkpad_acpi.c:10246: undefined reference to `platform_profile_remove'

This could be fixed by changing the IS_ENABLED to IS_REACHABLE, but
I believe that it is better to just switch to using depends on.

Using depends on ensures that platform-profile support is always
available when thinkpad_acpi is build, hopefully leading to less
confusing bug-reports about it sometimes not working.

Cc: Mark Pearson <[e-mail]>
Signed-off-by: Hans de Goede <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/platform/x86/Kconfig

···
 	depends on RFKILL || RFKILL = n
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	depends on BACKLIGHT_CLASS_DEVICE
+	depends on ACPI_PLATFORM_PROFILE
 	select HWMON
 	select NVRAM
 	select NEW_LEDS

drivers/platform/x86/thinkpad_acpi.c

···
 	.exit = proxsensor_exit,
 };
 
-#if IS_ENABLED(CONFIG_ACPI_PLATFORM_PROFILE)
-
 /*************************************************************************
  * DYTC Platform Profile interface
  */
···
 	.name = "dytc-profile",
 	.exit = dytc_profile_exit,
 };
-#endif /* CONFIG_ACPI_PLATFORM_PROFILE */
 
 /*************************************************************************
  * Keyboard language interface
···
 
 	if (hkey_event == TP_HKEY_EV_THM_CSM_COMPLETED) {
 		lapsensor_refresh();
-#if IS_ENABLED(CONFIG_ACPI_PLATFORM_PROFILE)
 		/* If we are already accessing DYTC then skip dytc update */
 		if (!atomic_add_unless(&dytc_ignore_event, -1, 0))
 			dytc_profile_refresh();
-#endif
 	}
 }
 
···
 		.init = tpacpi_proxsensor_init,
 		.data = &proxsensor_driver_data,
 	},
-#if IS_ENABLED(CONFIG_ACPI_PLATFORM_PROFILE)
 	{
 		.init = tpacpi_dytc_profile_init,
 		.data = &dytc_profile_driver_data,
 	},
-#endif
 	{
 		.init = tpacpi_kbdlang_init,
 		.data = &kbdlang_driver_data,