media: staging/ipu7: add CONFIG_PCI dependency

This driver fails to build when PCI is disabled:

drivers/staging/media/ipu7/ipu7.c: In function 'ipu7_pci_config_setup':
drivers/staging/media/ipu7/ipu7.c:2260:15: error: implicit declaration of function 'pci_enable_msi'; did you mean 'pci_enable_sriov'? [-Wimplicit-function-declaration]
drivers/staging/media/ipu7/ipu7.c:2775:1: error: data definition has no type or storage class [-Werror]
driver(ipu7_pci_driver);
drivers/staging/media/ipu7/ipu7.c:2764:26: error: 'ipu7_pci_driver' defined but not used [-Werror=unused-variable]

Add the required Kconfig dependency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

Author: arndb

drivers/staging/media/ipu7/Kconfig

@@ -4,6 +4,7 @@ config VIDEO_INTEL_IPU7
 	depends on VIDEO_DEV
 	depends on X86 && HAS_DMA
 	depends on IPU_BRIDGE || !IPU_BRIDGE
+	depends on PCI
 	select AUXILIARY_BUS
 	select IOMMU_IOVA
 	select VIDEO_V4L2_SUBDEV_API