drm/mediatek: add connection from OD1 to RDMA1

This patch add the connection from OD1 to RDMA1 for ext path.
Signed-off-by: Stu Hsieh <stu.hsieh@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drivers/gpu/drm/mediatek/mtk_drm_ddp.c

@@ -75,6 +75,7 @@
 
 #define OVL0_MOUT_EN_COLOR0		0x1
 #define OD_MOUT_EN_RDMA0		0x1
+#define OD1_MOUT_EN_RDMA1		BIT(16)
 #define UFOE_MOUT_EN_DSI0		0x1
 #define COLOR0_SEL_IN_OVL0		0x1
 #define OVL1_MOUT_EN_COLOR1		0x1
@@ -151,6 +152,9 @@ static unsigned int mtk_ddp_mout_en(enum mtk_ddp_comp_id cur,
 	} else if (cur == DDP_COMPONENT_GAMMA && next == DDP_COMPONENT_RDMA1) {
 		*addr = DISP_REG_CONFIG_DISP_GAMMA_MOUT_EN;
 		value = GAMMA_MOUT_EN_RDMA1;
+	} else if (cur == DDP_COMPONENT_OD1 && next == DDP_COMPONENT_RDMA1) {
+		*addr = DISP_REG_CONFIG_DISP_OD_MOUT_EN;
+		value = OD1_MOUT_EN_RDMA1;
 	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
 		*addr = DISP_REG_CONFIG_DISP_RDMA1_MOUT_EN;
 		value = RDMA1_MOUT_DPI0;