Input: edt-ft5x06 - add fw_version debugfs file to read
requested to merge martin.kepplinger/linux-next:5.6-rc6/librem5___ft_fw_check into imx8-current-librem5
Add simple fw_version file in debugfs to read the value from 0xa6 which is the firmware version.
Signed-off-by: Martin Kepplinger martin.kepplinger@puri.sm
upstream reference: https://lore.kernel.org/linux-input/40d823d7-5873-2a3c-9f49-87fdb7428061@puri.sm/T/#t