dtoverlays: Fixup pendown gpio polarity for ads7846 users#6029

pelwell merged 1 commit intoraspberrypi:rpi-6.6.yraspberrypi/linux:rpi-6.6.yfrom

6by9:rpi-6.6.y-dt6by9/linux:rpi-6.6.y-dtCopy head branch name to clipboard