media: mantis: Kconfig: add depends on DVB_CORE for MANTIS_CORE

MANTIS_CORE needs DVB_CORE, set 'depends on' explicitly

ERROR: modpost: "dvb_dmx_init" [drivers/media/pci/mantis/mantis_core.ko] undefined!
ERROR: modpost: "dvb_unregister_adapter" [drivers/media/pci/mantis/mantis_core.ko] undefined!
ERROR: modpost: "dvb_register_frontend" [drivers/media/pci/mantis/mantis_core.ko] undefined!
ERROR: modpost: "dvb_ca_en50221_camchange_irq" [drivers/media/pci/mantis/mantis_core.ko] undefined!
ERROR: modpost: "dvb_unregister_frontend" [drivers/media/pci/mantis/mantis_core.ko] undefined!
>> ERROR: modpost: "dvb_ca_en50221_camready_irq" [drivers/media/pci/mantis/mantis_core.ko] undefined!
>> ERROR: modpost: "dvb_frontend_detach" [drivers/media/pci/mantis/mantis_core.ko] undefined!
>> ERROR: modpost: "dvb_dmxdev_release" [drivers/media/pci/mantis/mantis_core.ko] undefined!
>> ERROR: modpost: "dvb_dmx_swfilter" [drivers/media/pci/mantis/mantis_core.ko] undefined!

Link: https://lore.kernel.org/linux-media/[e-mail]
Reported-by: kernel test robot <[e-mail]>
Signed-off-by: Lecopzer Chen <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/pci/mantis/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0-only
 config MANTIS_CORE
 	tristate "Mantis/Hopper PCI bridge based devices"
-	depends on PCI && I2C && INPUT && RC_CORE
+	depends on PCI && I2C && INPUT && RC_CORE && DVB_CORE
 
 	help
 	  Support for PCI cards based on the Mantis and Hopper PCi bridge.