Convert remaining PS2AVRGB boards to I2C WS2812 driver (#7245)

* Convert remaining PS2AVRGB boards to I2C WS2812 driver

* Add back functions to make the custom matrices happy

keyboards/ymd75/rules.mk

@@ -1,19 +1,3 @@
-# Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.com>
-# Modified 2018 Wayne Jones (WarmCatUK) <waynekjones@gmail.com>
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
 # MCU name
 MCU = atmega32a
 
@@ -35,7 +19,7 @@ CONSOLE_ENABLE = no
 COMMAND_ENABLE = yes
 BACKLIGHT_ENABLE = yes
 RGBLIGHT_ENABLE = yes
-RGBLIGHT_CUSTOM_DRIVER = yes
+WS2812_DRIVER = i2c
 NKRO_ENABLE = no
 # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 
@@ -51,4 +35,4 @@ SLEEP_LED_ENABLE = no    # Breathing sleep LED during USB suspend
 
 # custom matrix setup
 CUSTOM_MATRIX = yes
-SRC = matrix.c i2c.c backlight.c
+SRC = matrix.c backlight.c