For T2TOS Rev. 2 - change reset pin von Arduino Uno D4 to D6

[aentinger]

We had to change the reset pin of the T1S tranceiver from UNO D4 pin to UNO D7 pin this to free D4, which is SPI CS for SDCARD on the ETH SHIELD.

[aentinger]

Fix: nRESET was actually moved to pin D6, see https://arduino.atlassian.net/browse/HW-498 .