Update notes for submitted changes

* encore_cm10.1_defconfig: set CONFIG_ENCORE_ORIENTATION_LANDSCAPE
* encore: add support for changing default screen orientation
* cyttsp: add support for flipping and reversing coordinate axes
* ft5x06: don't assume REVERSE_Y_FLAG is set
* encore: set REVERSE_Y_FLAG for ft5x06 touchscreen
* Clean up Kconfig menu for encore overclock