[ Upstream commit f6828e0c4045f03f9cf2df6c2a768102641183f4 ] Disable the RPTR shadow across all targets. It will be selectively re-enabled later for targets that need it. Cc: stable@vger.kernel.org Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Sasha Levin <sashal@kernel.org>