Add GSM to Portenta libraries at packaging

Author: facchinm

portenta.variables

@@ -1,5 +1,5 @@
 export FLAVOUR="portenta"
 export VARIANTS=("PORTENTA_H7_M7 PORTENTA_H7_M4")
 export FQBNS=("envie_m7 envie_m4")
-export LIBRARIES=("doom Ethernet MRI Portenta_SDRAM SPI WiFi ea_malloc openamp_arduino Portenta_System ThreadDebug Himax_HM01B0 PDM Portenta_Video USBAudio KernelDebug Portenta_Audio RPC USBHID Wire Portenta_lvgl Portenta_Camera rpclib USBHOST mbed-memory-status Portenta_SDCARD Scheduler USBMSD SocketWrapper")
+export LIBRARIES=("doom Ethernet MRI Portenta_SDRAM SPI WiFi ea_malloc openamp_arduino Portenta_System ThreadDebug Himax_HM01B0 PDM Portenta_Video USBAudio KernelDebug Portenta_Audio RPC USBHID Wire Portenta_lvgl Portenta_Camera rpclib USBHOST mbed-memory-status Portenta_SDCARD Scheduler USBMSD SocketWrapper GSM")
 export BOOTLOADERS=("PORTENTA_H7")