I saw some activity in my google searchs on this topic that took place some time in March of 2012. However, when I get 'trunk' there is no mention of P1020 RDB or WLAN in the file:
target/linux/mpc85xx/image/Makefile
The only 'target' seems to be
mpc8648cds
And the patches-3.3 folder only seems to have patches associated with that platform.
In the linux-3.3.8 kernel hierarchy, there are configurations for the P1020 RDB as well as several other mpc85xx platforms.
The question is... where, if they exist, are the configurations and pataches for the p1020.
I attempted to access:
https://dev.openwrt.org/wiki/GetSource
And I get a '502 Bad Gateway' html error page.
The Freescale supplied 'ltib' package has an ancient kernel version, 2.6.32, and relative to my needs for Atheros support, way out of date.