pipeline: simple: Add support for MediaTek MT8365 platforms

The camera pipeline for MediaTek MT8365 consists of the following:
Raw sensor (+ external ISP) --> SENINF --> CAMSV30 --> DRAM

SENINF (SENsor INterFace) is a CSI-2 receiver.
CAMSV30 (Camera Simple Version) is a DMA Engine which bypasses
ISP3.0 and writes directly to DRAM.
Both SENINF and CAMSV30 are supported by V4L2 drivers.

MT8365 platform consists of a hardware converter called MDP which
supports up to three streams.

Signed-off-by: Suhrid Subramaniam <suhrid.subramaniam@mediatek.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/converter/converter_v4l2_m2m.cpp

@@ -445,6 +445,7 @@ int V4L2M2MConverter::queueBuffers(FrameBuffer *input,
 }
 
 static std::initializer_list<std::string> compatibles = {
+	"mtk-mdp",
 	"pxp",
 };
 

src/libcamera/pipeline/simple/simple.cpp

@@ -193,6 +193,7 @@ static const SimplePipelineInfo supportedDevices[] = {
 	{ "dcmipp", {} },
 	{ "imx7-csi", { { "pxp", 1 } } },
 	{ "j721e-csi2rx", {} },
+	{ "mtk-seninf", { { "mtk-mdp", 3 } } },
 	{ "mxc-isi", {} },
 	{ "qcom-camss", {} },
 	{ "sun6i-csi", {} },