Implemented turbo buttons for X and Y.
Implemented turbo buttons for X and Y.

wangweijia/nes,UIKit0/nes,horryq/nes,sunclx/nes,tastynoodle/nes,fogleman/nes,Rosmianto/nes,liqingzhu/nes,sheenobu/nes,insionng/nes,xuxiandi/nes,Esmidth/nes,EmuxEvans/nes,Endika/nes,trigrass2/nes