fix(dma2d): enable dma2d clock for STM32N6 (#9044)

Author: SetZero

src/draw/dma2d/lv_draw_dma2d.c

@@ -79,7 +79,7 @@ void lv_draw_dma2d_init(void)
     RCC->AHB1ENR |= RCC_AHB1ENR_DMA2DEN;
 #elif defined(STM32H7)
     RCC->AHB3ENR |= RCC_AHB3ENR_DMA2DEN;
-#elif defined(STM32H7RS)
+#elif defined(STM32H7RS) || defined(STM32N6)
     RCC->AHB5ENR |= RCC_AHB5ENR_DMA2DEN;
 #else
 #warning "LVGL can't enable the clock for DMA2D"
@@ -102,7 +102,7 @@ void lv_draw_dma2d_deinit(void)
     RCC->AHB1ENR &= ~RCC_AHB1ENR_DMA2DEN;
 #elif defined(STM32H7)
     RCC->AHB3ENR &= ~RCC_AHB3ENR_DMA2DEN;
-#elif defined(STM32H7RS)
+#elif defined(STM32H7RS) || defined(STM32N6)
     RCC->AHB5ENR &= ~RCC_AHB5ENR_DMA2DEN;
 #endif