Fix Kobo Mk7 detection (#780)
Fix Kobo Mk7 detection (#780)

To get shiny REAGL handling :)
Frenzie/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,Frenzie/koreader-base,Frenzie/koreader-base,NiLuJe/koreader-base,houqp/koreader-base,NiLuJe/koreader-base,koreader/koreader-base,houqp/koreader-base,houqp/koreader-base,houqp/koreader-base,Frenzie/koreader-base,koreader/koreader-base,NiLuJe/koreader-base,koreader/koreader-base