PN532.cpp: Transmits MIUX on connect for LLCP
PN532.cpp: Transmits MIUX on connect for LLCP

I added 4Bytes to the default command of `tgInitAsTarget`. These bytes
form the MIUX in TLV format.
Type: 0x02
Length: 0x02
MIUX: MIUX = MIU - 128 in 11Bit (0x03 0x08) == 1024

Issue: #28

jlkalberer/PN532,jlkalberer/PN532