staging: vchiq_arm: drop unnecessary declarations

vchiq_arm.h contains some unnecessary declarations, so drop them.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1633264369-998-3-git-send-email-stefan.wahren@i2se.com


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