lcd/scripts: Add helper scripts for load/unload

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>

lcd-domains/scripts/loadex

+#! /bin/bash -e
+
+sudo dmesg -c > /dev/null
+sudo insmod build/test_mods/$@/boot/lcd_test_mod_$@_boot.ko

lcd-domains/scripts/unloadex

+#! /bin/bash -e
+
+sudo rmmod lcd_test_mod_$@_boot