staging: vchiq_arm: Avoid multiline dereference

Reduce the indentation within vchiq_dump_service_use_state in order
to avoid a multiline derefernce.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>