Added APA102 support (#4940)

* Fixed pin for RGB

* Re-did apa102 stuff

* changed to use pincontrol functions

* Removed a newline?

* Changed to comply with project style

drivers/avr/apa102.h

@@ -0,0 +1,46 @@
+/*
+ * light weight WS2812 lib include
+ *
+ * Version 2.3  - Nev 29th 2015
+ * Author: Tim (cpldcpu@gmail.com)
+ *
+ * Please do not change this file! All configuration is handled in "ws2812_config.h"
+ *
+ * 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
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#include "rgblight_types.h"
+
+
+/* User Interface
+ *
+ * Input:
+ *         ledarray:           An array of GRB data describing the LED colors
+ *         number_of_leds:     The number of LEDs to write
+ *         pinmask (optional): Bitmask describing the output bin. e.g. _BV(PB0)
+ *
+ * The functions will perform the following actions:
+ *         - Set the data-out pin as output
+ *         - Send out the LED data
+ *         - Wait 50<EFBFBD>s to reset the LEDs
+ */
+
+void apa102_setleds     (LED_TYPE *ledarray, uint16_t number_of_leds);
+void apa102_setleds_pin (LED_TYPE *ledarray, uint16_t number_of_leds,uint8_t pinmask);
+void apa102_setleds_rgbw(LED_TYPE *ledarray, uint16_t number_of_leds);