UPSTREAM: dt-bindings: HID: i2c-hid: elan: add Elan eKTH5015M

Add a compatible string for the Elan eKTH5015M touch controller.

Judging from the current binding and commit bd3cba00 ("HID: i2c-hid:
elan: Add support for Elan eKTH6915 i2c-hid touchscreens"), eKTH5015M
appears to be compatible with eKTH6915. Notably the power-on sequence is
the same.

While at it, drop a redundant label from the example.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20240507144821.12275-3-johan+linaro@kernel.org


Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
(cherry picked from commit 07fc16fa)

BUG=b:351287243
TEST=git diff

Change-Id: I193e0d828508e54fb2c0fb018e1665f6b61a01ed
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/5833969


Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Hubert Mazur <hmazur@google.com>