PRU support package for BeagleBone and BeagleBone Black (am335x) updated to support previously undocumented

PRU support package for BeagleBone and BeagleBone Black (am335x) updated to support previously undocumented features
https://github.com/beagleboard/am335x_pru_package

Looks like the new opcodes are:
FILL XIN XOUT XCHG SXIN SXOUT SXCHG LOOP ILOOP NOP0…F

Where are they documented?

PRU core version 3? Is this for the AM43xx?

@Jan_Lubbe no, this is for AM335x. @Przemek_Klosowski they are documented in the included reference guide.