gpu: Use @dr87 gpu drivers

I think it'll work better with AOSP
Revert "defconfigs: Remove knock code feature"

This reverts commit 28428b73769a05339d19e1e1750696558f50a551.
Revert "Revert "defconfigs: Remove knock code feature""

This reverts commit 68efd0919325d38c018bae0e1822c2ec9b445be4.
Revert "gpu: Use @dr87 gpu drivers"

This reverts commit 5f4d6e908cb3c6356cf8b6632793a0844c25b182.
mdss: Notify userspace of changes to blank status

Allow userspace to poll on the blank event to avoid triggering
unnecessary updates, such as when shutting down the device.

CRs-Fixed: 627814
Change-Id: I36bb7845edba14ba0b0ddbe43eaf3d386af2d5f1
Signed-off-by: Naseer Ahmed <naseer@codeaurora.org>
mdss: Add newline to VSYNC timestamp

This makes sure that the userspace correctly interprets the end
of the vsync timestamp.

Change-Id: I66f9939658b6fb7531468429c1ca3e551a4a285c
Signed-off-by: Naseer Ahmed <naseer@codeaurora.org>