staging: vc04_services: Drop VCHIQ_SUCCESS usage

staging: vc04_services: Drop VCHIQ_SUCCESS usage

[ Upstream commit 3414994ba840425b313853a47d581dd5c6c2d300 ]

Drop the usage of VCHIQ_SUCCESS vchiq_status enum type. Replace it with
0 to report the success status.

This patch acts as intermediatory to address the TODO item:
	* Get rid of custom function return values
for vc04_services/interface.

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/20221223122404.170585-3-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: f2b8ebfb8670 ("staging: vchiq_arm: Make vchiq_shutdown never fail")
Signed-off-by: Sasha Levin <sashal@kernel.org>