[PATCH -rc1] msi-laptop: fix config-dependent build error

[Randy Dunlap]

From: Randy Dunlap <randy.dunlap@xxxxxxxxxx>

The msi-laptop driver uses input_*() and sparse_keymap_*() interfaces.
It should depend on the INPUT subsystem being present and select
INPUT_SPARSEKMAP so that those interfaces are present.

ERROR: "input_free_device" [drivers/platform/x86/msi-laptop.ko] undefined!
ERROR: "input_register_device" [drivers/platform/x86/msi-laptop.ko] undefined!
ERROR: "sparse_keymap_setup" [drivers/platform/x86/msi-laptop.ko] undefined!
ERROR: "input_allocate_device" [drivers/platform/x86/msi-laptop.ko] undefined!
ERROR: "sparse_keymap_report_event" [drivers/platform/x86/msi-laptop.ko] undefined!
ERROR: "input_unregister_device" [drivers/platform/x86/msi-laptop.ko] undefined!
ERROR: "sparse_keymap_free" [drivers/platform/x86/msi-laptop.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Cc: Matthew Garrett <mjg@xxxxxxxxxx>
Cc: "Lee, Chun-Yi" <jlee@xxxxxxxxxx>
---
 drivers/platform/x86/Kconfig |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- lnx-2639-rc1.orig/drivers/platform/x86/Kconfig
+++ lnx-2639-rc1/drivers/platform/x86/Kconfig
@@ -187,7 +187,8 @@ config MSI_LAPTOP
 	depends on ACPI
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on RFKILL
-	depends on SERIO_I8042
+	depends on INPUT && SERIO_I8042
+	select INPUT_SPARSEKMAP
 	---help---
 	  This is a driver for laptops built by MSI (MICRO-STAR
 	  INTERNATIONAL):
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