[ Upstream commit 348b80b2 ]

Add multitouch support for LG MELF I2C touchscreen.
Apply the same workaround as LG USB touchscreen.
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>