The MMS134S like the MMS136 has an event size of 6 bytes.

After this patch, the touchscreen on the Samsung SGH-I407
works fine with PostmarketOS.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210706235951.189289-1-linus.walleij@linaro.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>