kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_8723AU_P2P.
Result is shown for kernelversion 3.15.9

Realtek RTL8723AU Peer-to-peer mode

configname: CONFIG_8723AU_P2P

Linux Kernel Configuration
└─> Device Drivers
└─> Staging drivers
└─> Realtek RTL8723AU Peer-to-peer mode

This option enables peer-to-peer mode for the r8723au driver. Unless you
know that peer-to-peer (P2P) mode will never be used, or the target system has
limited memory, "Y" should be selected.