Add QAZ shield

app/boards/shields/qaz/boards/nice_nano.overlay

@@ -0,0 +1,22 @@
+&spi1 {
+  compatible = "nordic,nrf-spi";
+  status = "okay";
+  mosi-pin = <47>;
+  // Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+  sck-pin = <5>;
+  miso-pin = <7>;
+
+  led_strip: ws2812@0 {
+    compatible = "worldsemi,ws2812-spi";
+    label = "WS2812";
+
+    /* SPI */
+    reg = <0>; /* ignored, but necessary for SPI bindings */
+    spi-max-frequency = <4000000>;
+
+    /* WS2812 */
+    chain-length = <21>; /* number of LEDs */
+    spi-one-frame = <0x70>;
+    spi-zero-frame = <0x40>;
+  };
+};