drm/panel: simple: Add support for Innolux AT043TN24

The Innolux AT043TN24 4.3" WQVGA TFT LCD panel.
This panel with backlight is found in PDA 4.3" LCD screen (TM43xx series for
instance).
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

Documentation/devicetree/bindings/panel/innolux,at043tn24.txt

+Innolux AT043TN24 4.3" WQVGA TFT LCD panel
+
+Required properties:
+- compatible: should be "innolux,at043tn24"
+
+This binding is compatible with the simple-panel binding, which is specified
+in simple-panel.txt in this directory.

drivers/gpu/drm/panel/panel-simple.c

@@ -663,6 +663,31 @@ static const struct panel_desc hitachi_tx23d38vm0caa = {
 	},
 };
 
+static const struct drm_display_mode innolux_at043tn24_mode = {
+	.clock = 9000,
+	.hdisplay = 480,
+	.hsync_start = 480 + 2,
+	.hsync_end = 480 + 2 + 41,
+	.htotal = 480 + 2 + 41 + 2,
+	.vdisplay = 272,
+	.vsync_start = 272 + 2,
+	.vsync_end = 272 + 2 + 11,
+	.vtotal = 272 + 2 + 11 + 2,
+	.vrefresh = 60,
+	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+};
+
+static const struct panel_desc innolux_at043tn24 = {
+	.modes = &innolux_at043tn24_mode,
+	.num_modes = 1,
+	.bpc = 8,
+	.size = {
+		.width = 95,
+		.height = 54,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+};
+
 static const struct drm_display_mode innolux_g121i1_l01_mode = {
 	.clock = 71000,
 	.hdisplay = 1280,
@@ -871,6 +896,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "hit,tx23d38vm0caa",
 		.data = &hitachi_tx23d38vm0caa
+	}, {
+		.compatible = "innolux,at043tn24",
+		.data = &innolux_at043tn24,
 	}, {
 		.compatible ="innolux,g121i1-l01",
 		.data = &innolux_g121i1_l01