arm64: dts: amlogic: meson-gx-libretech-pc: fix update button name

stable inclusion
from stable-v5.10.173
commit 269fd2fb043e01aaf1b59e730319397f56099edf
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8BFR3

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=269fd2fb043e01aaf1b59e730319397f56099edf

--------------------------------

[ Upstream commit 6bb506ed ]

Fixes:
 adc-keys: 'update-button' does not match any of the regexes: '^button-', 'pinctrl-[0-9]+'

Link: https://lore.kernel.org/r/20230124-b4-amlogic-bindings-fixups-v1-10-44351528957e@linaro.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>