Refactor Equinox PCB revisions (qmk#8266)

* Refactor Equinox PCB revisions

* typo

keyboards/ai03/equinox/keymaps/proto_via/config.h → keyboards/ai03/equinox/rev0/config.h

@@ -21,3 +21,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #undef MATRIX_COL_PINS
 #define MATRIX_COL_PINS { C4, B7, C6, C7, B6, B5, B4, B3, B2, B1, B0, D6 }
 
+// This directs backlight code to use a disconnected pin, so the firwmare still has
+// backlight code and VIA support even though it doesn't do anything.
+#undef BACKLIGHT_PIN
+#define BACKLIGHT_PIN D1

keyboards/ai03/equinox/rev0/rules.mk

@@ -0,0 +1 @@
+# Dummy rules.mk, rev0 uses parent rules.mk as is

keyboards/ai03/equinox/rev1/config.h

@@ -0,0 +1,18 @@
+/*
+Copyright 2019 Ryota Goto
+
+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/>.
+*/
+
+#pragma once

keyboards/ai03/equinox/rev1/rules.mk

@@ -0,0 +1 @@
+# Dummy rules.mk, rev1 uses parent rules.mk as is