staging: vchiq_core: drop vchiq_status from vchiq_initialise

commit abf2836a

 upstream.

Replace the custom set of return values with proper Linux error codes for
vchiq_initialise().

Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1619347863-16080-11-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>