boards/esp32-wrover-kit: change default PORT_LINUX

Changes the default port on LINUX systems to /dev/ttyUSB1. /dev/ttyUSB0 is the JTAG interface for OCD.

boards/esp32-wrover-kit/Makefile.include

@@ -2,4 +2,7 @@ PSEUDOMODULES += esp32_wrover_kit_camera
 
 USEMODULE += boards_common_esp32
 
+# configure the serial interface
+PORT_LINUX ?= /dev/ttyUSB1
+
 include $(RIOTBOARD)/common/esp32/Makefile.include