Since commit 9d6b0cd75798 ("fs: Remove flags parameter from
aops->write_begin"), included in v5.19, the flags parameter has been
removed, so adapt kdbus code for this change.
Change-Id: I56729e1302dfaf561671babdc936165ee1599da7 Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>