Input: add SW_ROTATE_LOCK switch type

This switch is used to signal that user want to disable screen
transitions from portrait to landscape mode and back.

Signed-off-by: Jekyll Lai <jekyll_lai@wistron.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>