staging: bcm2835: fix vchiq_mmal dependencies

staging: bcm2835: fix vchiq_mmal dependencies

When the MMAL code is built-in but the vchiq core config is
set to =m, the mmal code never gets built, which in turn can
lead to link errors:

ERROR: modpost: "vchiq_mmal_port_set_format" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_port_disable" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_port_parameter_set" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_component_finalise" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_port_connect_tunnel" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_component_enable" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_finalise" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_component_init" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_component_disable" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "mmal_vchi_buffer_init" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_port_enable" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_version" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_submit_buffer" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_init" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "mmal_vchi_buffer_cleanup" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!
ERROR: modpost: "vchiq_mmal_port_parameter_get" [drivers/staging/vc04_services/bcm2835-camera/bcm2835-v4l2.ko] undefined!

Change the Kconfig to depend on BCM2835_VCHIQ like the other drivers,
and remove the now redundant dependencies.

Fixes: b18ee53ad297 ("staging: bcm2835: Break MMAL support out from camera")
Acked-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20201203223836.1362313-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>