staging: bcm2835-audio: Removed braces of single statement blocks

bcm2835-vchiq.c:
fixing WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Abhijit Naik <abhijitnaik27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>