First tests with O/C recovery mode for AR9331
Default clocks define
Simpler settings for PLL registers on AR9331
CPU/RAM/AHB clocks and memory type print
PLL/clocks settings in FLASH and O/C recovery for AR9331, other minor changes, AR9344 still needs work (OFW kernel doesn't load, no O/C and O/C recovery)
Merge branch 'oc_recovery' to master