[lightning-ln882h] Fix default log UART port to UART1 (libretiny-eu#373)

Per Tuya WL2H-U datasheet, UART1 (PB8/PB9) is the designated log output
port on LN882H modules. UART0 (PA2/PA3) is the user UART and is typically
connected to GPIOs on CB3S-footprint boards (e.g. indicator LEDs on the
DS-101JL wall switch). Using UART0 as the default log port was introduced
in libretiny-eu#312 and caused PA2/PA3 to be claimed by AFIO, preventing their use
as GPIO.

Change lt_family.h to prefer UART1 over UART0 as the default, consistent
with how beken-72xx defaults to UART2/UART1 and avoids UART0.

Author: Bl00d-B0b

cores/lightning-ln882h/base/lt_family.h

@@ -5,11 +5,13 @@
 #include <lt_pins.h>
 
 // Choose the main UART output port
+// Per Tuya WL2H-U datasheet, UART1 (PB8/PB9) is the designated log port;
+// UART0 (PA2/PA3) is the user UART and should remain free as GPIO.
 #ifndef LT_UART_DEFAULT_PORT
-#if LT_HW_UART0
-#define LT_UART_DEFAULT_PORT 0
-#elif LT_HW_UART1
+#if LT_HW_UART1
 #define LT_UART_DEFAULT_PORT 1
+#elif LT_HW_UART0
+#define LT_UART_DEFAULT_PORT 0
 #elif LT_HW_UART2
 #define LT_UART_DEFAULT_PORT 2
 #else