Fix input devices on K3.
Fix input devices on K3.

re #1623

lgeek/koreader,pazos/koreader,mwoz123/koreader,houqp/koreader,Frenzie/koreader,NiLuJe/koreader,Hzj-jie/koreader,chihyang/koreader,chrox/koreader,poire-z/koreader,Frenzie/koreader,mihailim/koreader,noname007/koreader,NickSavage/koreader,apletnev/koreader,ashhher3/koreader,Markismus/koreader,koreader/koreader,koreader/koreader,robert00s/koreader,NiLuJe/koreader,poire-z/koreader,frankyifei/koreader