general-joystick: don't report buttons if they're not assigned to pins
general-joystick: don't report buttons if they're not assigned to pins

StephenBlackWasAlreadyTaken/wixel-xDrip,sm6xmm/wixel-xDrip,sm6xmm/wixel-xDrip,saercnap/wixel-DexDrip,novagannas/wixel-xDrip,sm6xmm/wixel-xDrip,saercnap/wixel-DexDrip,saercnap/wixel-DexDrip,Cagier/wixel-xDrip,markncooper/burnerlight,novagannas/wixel-xDrip,jamorham/wixel-xDrip,markncooper/burnerlight,jamorham/wixel-xDrip,sm6xmm/wixel-xDrip,jamorham/wixel-xDrip,raduiliescu/wixel-DexDrip,raduiliescu/wixel-DexDrip,jamorham/wixel-xDrip,novagannas/wixel-xDrip,raduiliescu/wixel-DexDrip,StephenBlackWasAlreadyTaken/wixel-xDrip,Cagier/wixel-xDrip,Cagier/wixel-xDrip,StephenBlackWasAlreadyTaken/wixel-xDrip,markncooper/burnerlight