fix(t-deck): fix display driver alias being protected (#546)

* fix(t-deck): fix display driver alias being protected

* Update components/t-deck/include/t-deck.hpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: finger563

components/t-deck/include/t-deck.hpp

@@ -62,6 +62,9 @@ class TDeck : public BaseComponent {
   /// Alias for the pixel type used by the TDeck display
   using Pixel = lv_color16_t;
 
+  /// Alias for the display driver used by the TDeck
+  using DisplayDriver = espp::St7789;
+
   /// Maximum number of bytes that can be transferred in a single SPI
   /// transaction to the Display. 32k on the ESP32-S3.
   static constexpr size_t SPI_MAX_TRANSFER_BYTES = SPI_LL_DMA_MAX_BIT_LEN / 8;
@@ -513,7 +516,6 @@ class TDeck : public BaseComponent {
   static constexpr bool mirror_portrait = true;
   static constexpr bool swap_xy = false;
   static constexpr gpio_num_t backlight_io = GPIO_NUM_42;
-  using DisplayDriver = espp::St7789;
 
   // touch
   static constexpr bool touch_swap_xy = true;