Fix irremote reporting incorrect NEC addresses and command codes (#422)

Change from reading MSB->LSB to LSB->MSB
Fixes https://github.com/tinygo-org/drivers/issues/422

examples/irremote/main.go

@@ -8,27 +8,27 @@ import (
 )
 
 var irCmdButtons = map[uint16]string{
-	0xA2: "POWER",
-	0xE2: "FUNC/STOP",
-	0x62: "VOL+",
-	0x22: "FAST BACK",
-	0x02: "PAUSE",
-	0xC2: "FAST FORWARD",
-	0xE0: "DOWN",
-	0xA8: "VOL-",
-	0x90: "UP",
-	0x98: "EQ",
-	0xB0: "ST/REPT",
-	0x68: "0",
-	0x30: "1",
+	0x45: "POWER",
+	0x47: "FUNC/STOP",
+	0x46: "VOL+",
+	0x44: "FAST BACK",
+	0x40: "PAUSE",
+	0x43: "FAST FORWARD",
+	0x07: "DOWN",
+	0x15: "VOL-",
+	0x09: "UP",
+	0x19: "EQ",
+	0x0D: "ST/REPT",
+	0x16: "0",
+	0x0C: "1",
 	0x18: "2",
-	0x7A: "3",
-	0x10: "4",
-	0x38: "5",
+	0x5E: "3",
+	0x08: "4",
+	0x1C: "5",
 	0x5A: "6",
 	0x42: "7",
-	0x4A: "8",
-	0x52: "9",
+	0x52: "8",
+	0x4A: "9",
 }
 
 var (