Display group name for sceNetAdhocctlConnect

I noticed the God Eater 2 demo used this function, so I thought it might be nice for curious users like me to see the group name for this function.

The demo thinks the wireless switch isn't on (because of ERROR_NET_ADHOCCTL_WLAN_SWITCH_OFF), but since PPSSPP doesn't really have a full sceNet implementation yet that error should be okay for now.

![adhoc](https://f.cloud.github.com/assets/1909938/1013109/f6126b8c-0b7d-11e3-9782-c4202de21859.jpg)