Revert "drm/msm/dpu: fix mismatch in function argument."

This reverts commit f4b0f66d.

This reversion is happening as a result of disabling the
disp/dpu directory as it will not be used in 4.19 downstream
display driver and these changes are made in the common layer
which affects the downstream driver functionalities. Separate
patches are submitted to revert the upstream driver and
introduce the downstream version of display driver.

Change-Id: If2edd13bde7c7bbd5893bedc7a7294dbc8573141
Signed-off-by: Samantha Tran <samtran@codeaurora.org>