arm64: dts: qcom: sm8350-sagami: Rectify GPIO keys

With enough pins set properly, the hardware buttons now also work
like a charm.

Fixes: c2721b0c

 ("arm64: dts: qcom: Add support for Xperia 1 III / 5 III")
Tested-by: Marijn Suijten <marijn.suijten@somainline.org> # On Xperia 1 III and Xperia 5 III
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221229102712.983306-1-konrad.dybcio@linaro.org