Update pins_arduino.h (#1948)

Pin definitions T8/T9 & DAC1/DAC2 Back To Front

Author: BBBits

Diff for: variants/heltec_wifi_lora_32/pins_arduino.h

@@ -55,11 +55,11 @@ static const uint8_t T4 = 13;
 static const uint8_t T5 = 12;
 static const uint8_t T6 = 14;
 static const uint8_t T7 = 27;
-static const uint8_t T8 = 32;
-static const uint8_t T9 = 33;
+static const uint8_t T8 = 33;
+static const uint8_t T9 = 32;
 
-static const uint8_t DAC1 = 26;
-static const uint8_t DAC2 = 25;
+static const uint8_t DAC1 = 25;
+static const uint8_t DAC2 = 26;
 
 // OLed
 static const uint8_t OLED_SCL = 15;