Here is my config file.

A= X
B= []
L= L1
R=R1
Z=R2
Dpad-up= none
Dpad-down= none
Dpad-left= none
Dpad-right= none

C-up= Dpad up
C-down= Dpad down
C-left= Dpad left
C-right= Dpad right
start=start
joystick= left joystick

Axis support is fully removed, so no annoying movement when moving the PS3 controller.

I removed the dpad buttons because i needed some to remap the yellow C buttons. the D-pad are hardly used by any game on the n64

I hope this file helps some people.