feat(mipi_dsi): allow to use dma2d in example when flash is encrypted

Closes https://github.com/espressif/esp-idf/issues/17708

docs/en/api-reference/peripherals/lcd/dsi_lcd.rst

@@ -94,7 +94,7 @@ MIPI DSI Interfaced LCD
 
     .. note::
 
-        Due to hardware limitation, if external memory encryption is enabled, DMA2D can only access address and length that are aligned to 16 bytes. Unless you can ensure that your draw buffer's address and length are aligned to 16 bytes, it is not recommended to use DMA2D to draw bitmap.
+        Due to hardware limitation, if external memory encryption is enabled, DMA2D can only access address and length that are aligned to 16 bytes. You need to ensure that your draw buffer's address and length are aligned to 16 bytes. :example:`peripherals/lcd/mipi_dsi` shows how to use LVGL to constrain the redrawn area to ensure alignment.
 
     If you need more advanced applications, you can add a custom hook for draw bitmap, such as using PPA to implement rotation, scaling, etc.
 

docs/zh_CN/api-reference/peripherals/lcd/dsi_lcd.rst

@@ -94,7 +94,7 @@ MIPI DSI 接口的 LCD
 
     .. note::
 
-        由于硬件限制，如果启用了外部存储加密，则 DMA2D 只能访问地址和长度都对齐到 16 字节的地址空间。除非你能确保你的绘制 buffer 的地址和长度都对齐到 16 字节， 否则不建议使用 DMA2D 来绘制位图。
+        由于硬件限制，如果启用了外部存储加密，则 DMA2D 只能访问地址和长度都对齐到 16 字节的地址空间。你需要确保你的绘制 buffer 的地址和长度都对齐到 16 字节。 :example:`peripherals/lcd/mipi_dsi` 演示了如何使用 LVGL 控制重新绘制区域来确保对齐。
 
     若需更高级的应用，用户可为绘制位图添加自定义钩子，例如通过 PPA 实现旋转、缩放等操作。