staging: vc04_services: add HAS_DMA dependancy

We need DMA for this, otherwise the build breaks, so fix this up.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/Kconfig

 config BCM2835_VCHIQ
 	tristate "Videocore VCHIQ"
+	depends on HAS_DMA
 	depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
 	default y
 	help