staging: vchi: Get rid of vchiq_status_to_vchi()

vchiq functions return an enum and vchi's ints. Those are compatible, no
need to explicitly cast them.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200527115400.31391-7-nsaenzjulienne@suse.de


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