Set peripheral mode for the correct UART TX/RX pins
[core/net/mac] Removed invalid struct member u8 in PRINTADDR
Merge pull request #382 from ejoerns/pull-req/core/net

core/net/mac: Invalid struct member u8 in PRINTADDR
Merge pull request #365 from g-oikonomou/cc2538-uart-init-fix

Set peripheral mode for the correct CC2538 UART TX/RX pins