the SOC is currently not supported by OpenWrt (search for the term 'lexra' for historic details).
even if the SOC were supported, the realtek wireless drivers are -to phrase it politely- not 'great', AP mode is probably not going to work at all.
On top of that, most realtek based routers are very short on flash/ RAM (often too short). I don't know anyone working on realtek routers (other than switches, rtl838x/ rtl839x/ rtl93xx) - and I don't really imagine that to change.