media: atomisp/pci: add missing include

Fix two smatch warnings:

drivers/staging/media/atomisp//pci/ia_css_firmware.h:52:29: warning: 'struct device' declared inside parameter list will not be visible outside of this definition or declaration
drivers/staging/media/atomisp//pci/ia_css_control.h:49:24: warning: 'struct device' declared inside parameter list will not be visible outside of this definition or declaration

Add '#include <linux/device.h>' to ia_css_firmware.h so struct device is defined.

ia_css_control.h includes ia_css_firmware.h, so it is sufficient to
just modify ia_css_firmware.h.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>