Fix ifdef

lib/BlueSCSI_platform_RP2MCU/BlueSCSI_platform_config.h

@@ -54,7 +54,7 @@
 # define PLATFORM_DEFAULT_SCSI_SPEED_SETTING 20
 #elif defined(BLUESCSI_V2)
 # define PLATFORM_NAME "BlueSCSI"
-#ifdef ARDUINO_ARCH_RP2040
+#ifdef BLUESCSI_MCU_RP20XX
 # define PLATFORM_PID "Pico1"
 #define FIRMWARE_PREFIX "BlueSCSI-Pico1"
 #else