Update framesize validation to check FRAMESIZE_5MP (#810)

Change error logging from error to warning for invalid framesize and set framesize to FRAMESIZE_5MP if it exceeds the limit.

Author: Wolfleader101

sensors/ov5640.c

@@ -384,9 +384,9 @@ static int set_framesize(sensor_t *sensor, framesize_t framesize)
     framesize_t old_framesize = sensor->status.framesize;
     sensor->status.framesize = framesize;
 
-    if(framesize > FRAMESIZE_QSXGA){
-        ESP_LOGE(TAG, "Invalid framesize: %u", framesize);
-        return -1;
+    if (framesize > FRAMESIZE_5MP) {
+        ESP_LOGW(TAG, "Invalid framesize: %u", framesize);
+        framesize = FRAMESIZE_5MP;
     }
     uint16_t w = resolution[framesize].width;
     uint16_t h = resolution[framesize].height;