V4L/DVB (10150): ttusb-dec: make it depend on PCI

Since ttusb_dec.c relies on pci_alloc_consistent and
pci_free_consistent, make it depend on PCI in Kconfig.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/ttusb-dec/Kconfig

 config DVB_TTUSB_DEC
 	tristate "Technotrend/Hauppauge USB DEC devices"
-	depends on DVB_CORE && USB && INPUT
+	depends on DVB_CORE && USB && INPUT && PCI
 	select CRC32
 	help
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