arm64: dts: qcom: pm6350: Include header for KEY_POWER

arm64: dts: qcom: pm6350: Include header for KEY_POWER

[ Upstream commit f6e2d6914c7c095660a9c7c503328eebab1e2557 ]

Make pm6350.dtsi self-contained by including input.h, needed for the
KEY_POWER constant used to define the power key.

Fixes: d8a3c775d7cd ("arm64: dts: qcom: Add PM6350 PMIC")
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221030073232.22726-5-marijn.suijten@somainline.org
Signed-off-by: Sasha Levin <sashal@kernel.org>