PSRAM fix & CCT IC

- prevent PSRAM use on ESP32 rev.1 without compile fix
- add runtime selection for CCT IC (Athom 15W bulb)

wled00/data/settings_leds.htm

@@ -866,6 +866,7 @@ Swap: <select id="xw${i}" name="XW${i}">
 			</select>
 			<br>
 			Calculate CCT from RGB: <input type="checkbox" name="CR"><br>
+			CCT IC used (Athom 15W): <input type="checkbox" name="IC"><br>
 			CCT additive blending: <input type="number" class="s" min="0" max="100" name="CB" required> %
 		</div>
 		<h3>Advanced</h3>