staging: vchiq_arm: remove unnecessary space in cast

As reported by checkpatch.pl, no space is necessary after a cast.

Signed-off-by: Gaston Gonzalez <gascoar@gmail.com>
Link: https://lore.kernel.org/r/20210919215914.539805-3-gascoar@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>