V4L/DVB: timberdale: fix mfd build

Fix mfd/timberdale build error -- add depends GPIOLIB.

include/linux/spi/max7301.h:14: error: field 'chip' has incomplete type
build-r7353.out:make[3]: *** [drivers/mfd/timberdale.o] Error 1

Repairs

commit ff7a26e08a16bb31158d830dbf60db2ff47019ab
Author:     Richard R<C3><B6>jfors <richard.rojfors@pelagicore.com>
AuthorDate: Thu Feb 4 08:18:52 2010 -0300
Commit:     Mauro Carvalho Chehab <mchehab@redhat.com>
CommitDate: Fri Feb 5 12:25:37 2010 -0200

    V4L/DVB: mfd: Add support for the timberdale FPGA
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Richard Rojfors <richard.rojfors@pelagicore.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/mfd/Kconfig

@@ -351,7 +351,7 @@ config AB4500_CORE
 config MFD_TIMBERDALE
 	tristate "Support for the Timberdale FPGA"
 	select MFD_CORE
-	depends on PCI
+	depends on PCI && GPIOLIB
 	---help---
 	This is the core driver for the timberdale FPGA. This device is a
 	multifunction device which exposes numerous platform devices.