drivers: video: update video drivers to handle min/max line count

Update existing video drivers to handle the min/max line count field
within the video_caps structure. All drivers work with full frames
currently, so use the special LINE_COUNT_HEIGHT value to indicate this.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>

drivers/video/video_esp32_dvp.c

@@ -234,6 +234,9 @@ static int video_esp32_get_caps(const struct device *dev, enum video_endpoint_id
 		return -EINVAL;
 	}
 
+	/* ESP32 produces full frames */
+	caps->min_line_count = caps->max_line_count = LINE_COUNT_HEIGHT;
+
 	/* Forward the message to the source device */
 	return video_get_caps(config->source_dev, ep, caps);
 }

drivers/video/video_mcux_csi.c

@@ -393,6 +393,8 @@ static int video_mcux_csi_get_caps(const struct device *dev, enum video_endpoint
 
 	/* NXP MCUX CSI request at least 2 buffer before starting */
 	caps->min_vbuf_count = 2;
+	/* CSI only operates on buffers of full frame size */
+	caps->min_line_count = caps->max_line_count = LINE_COUNT_HEIGHT;
 
 	/* no source dev */
 	return err;

drivers/video/video_stm32_dcmi.c

@@ -356,6 +356,9 @@ static int video_stm32_dcmi_get_caps(const struct device *dev,
 		return -EINVAL;
 	}
 
+	/* DCMI produces full frames */
+	caps->min_line_count = caps->max_line_count = LINE_COUNT_HEIGHT;
+
 	/* Forward the message to the sensor device */
 	ret = video_get_caps(config->sensor_dev, ep, caps);
 

drivers/video/video_sw_generator.c

@@ -237,6 +237,9 @@ static int video_sw_generator_get_caps(const struct device *dev, enum video_endp
 	caps->format_caps = fmts;
 	caps->min_vbuf_count = 0;
 
+	/* SW generator produces full frames */
+	caps->min_line_count = caps->max_line_count = LINE_COUNT_HEIGHT;
+
 	return 0;
 }