Move LCD driver to 2nd CPU; add PSX pad input device

Author: Spritetm

README.rst

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+ESP32-NESEMU, a Nintendo Entertainment System emulator for the ESP32
+====================================================================
+
+This is a quick and dirty port of Nofrendo, a Nintendo Entertainment System emulator. It lacks sound, but can emulate a NES at close
+to full speed, albeit with some framedrop due to the way the display is driven.
+
+Display
+-------
+
+To display the NES output, please connect a 320x240 ili9341-based SPI display to the ESP32 in this way:
+=====  =====
+Pin    GPIO
+=====  =====
+MISO   25
+MOSI   23
+CLK    19
+CS     22
+DC     21
+RST    18
+BCKL   5 (backlight enable)
+=====  =====
+
+
+Also connect the power supply and ground. For now, the LCD is controlled using a SPI peripheral, fed using the 2nd CPU. This is less than ideal; feeding
+the SPI controller using DMA is better, but was left out due to this being a proof of concept.
+
+
+Controller
+----------
+
+To control the NES, connect a Playstation 1 or 2 controller as such:
+=====  =====
+Pin    GPIO
+=====  =====
+CLK    14
+DAT    27
+ATT    16
+CMD    2
+=====  =====
+
+Also connect the power and ground lines. Most PS1/PS2 controllers work fine from a 3.3V power supply, if a 5V one is unavailable.
+
+ROM
+---
+This NES emulator does not come with a ROM. Please supply your own and flash to address 0x00100000. You can use the flashrom.sh script as a template for doing so.
+
+Copyright
+---------
+
+Code in this repository is Copyright (C) 2016 Espressif Systems, licensed under the Apache License 2.0 as described in the file LICENSE. Code in the
+components/nofrendo is Copyright (c) 1998-2000 Matthew Conte (matt@conte.com) and licensed under the GPLv2.
+

components/driver/README.txt

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+
+This is a hack to get the LCD driver, which is ripped from a fork of esp-idf, working under the current
+esp-idf. The contents of this directory are a mishmash of the current and the old driver and should not
+be used for anything. Espressif is not responsible if you use any of the code in this component!