Update hid-lg-g710-plus.c

* made usable under kernel 3.10:
  A kernel function is not exported anymore (usbhid_submit_report). See link below for details.
      https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d881427253da011495f4193663d809d0e9dfa215