Add TF300T

Please fork those repos:
http://github.com/xplodwild/android_device_asus_tf300t
http://github.com/xplodwild/android_kernel_asus_tf300t

Change-Id: I37489f6386066b81950a1df3871608ea0a75fbfc

vendorsetup.sh

@@ -38,6 +38,7 @@ add_lunch_combo cm_smultron-userdebug
 add_lunch_combo cm_tenderloin-userdebug
 add_lunch_combo cm_tf101-userdebug
 add_lunch_combo cm_tf201-userdebug
+add_lunch_combo cm_tf300t-userdebug
 add_lunch_combo cm_toro-userdebug
 add_lunch_combo cm_toroplus-userdebug
 add_lunch_combo cm_urushi-userdebug