new ldscript for extrafs nrf companion envs

variants/mesh_pocket/platformio.ini

@@ -67,6 +67,8 @@ build_flags =
 
 [env:Mesh_pocket_companion_radio_ble]
 extends = Mesh_pocket
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 712704
 build_flags =
   ${Mesh_pocket.build_flags}
   -I examples/companion_radio/ui-new
@@ -89,6 +91,8 @@ lib_deps =
 
 [env:Mesh_pocket_companion_radio_usb]
 extends = Mesh_pocket
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 712704
 build_flags =
   ${Mesh_pocket.build_flags}
   -I examples/companion_radio/ui-new