staging: vchiq_core: Simplify bulk data preparatory functions

staging: vchiq_core: Simplify bulk data preparatory functions

Two functions create_pagelist() and vchiq_prepare_bulk_data()
open code bulk data arguments ('size' and 'dir') in their function
signatures which can easily be obtained by struct vchiq_bulk pointer.

Retrieve the arguments from vchiq_bulk pointer instead and reduce
the number of arguments passed in create_pagelist() and
vchiq_bulk_prepare_data().

No functional changes intended in this patch.

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Link: https://lore.kernel.org/r/20241017133629.216672-3-umang.jain@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>