sony-laptop/thinkpad-acpi: fix INPUT=n build

Build errors if CONFIG_SONY_LAPTOP && !INPUT or
if CONFIG_THINKPAD_ACPI && !INPUT:

 LD      vmlinux
    ...
drivers/built-in.o: In function `sony_laptop_remove_input':
sony-laptop.c:(.text+0x768fb): undefined reference to `input_unregister_device'
    ...
drivers/built-in.o: In function `thinkpad_acpi_module_exit':
thinkpad_acpi.c:(.text+0x78c1b): undefined reference to `input_free_device'
    ...
Signed-off-by: NAndreas Herrmann <aherrman@arcor.de>
Acked-by: NHenrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NLen Brown <len.brown@intel.com>

drivers/misc/Kconfig

@@ -134,6 +134,7 @@ config SONY_LAPTOP
 	tristate "Sony Laptop Extras"
 	depends on X86 && ACPI
 	select BACKLIGHT_CLASS_DEVICE
+	depends on INPUT
 	  ---help---
 	  This mini-driver drives the SNC and SPIC devices present in the ACPI
 	  BIOS of the Sony Vaio laptops.
@@ -156,6 +157,7 @@ config THINKPAD_ACPI
 	select BACKLIGHT_CLASS_DEVICE
 	select HWMON
 	select NVRAM
+	depends on INPUT
 	---help---
 	  This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
 	  support for Fn-Fx key combinations, Bluetooth control, video