arm64: dts: qcom: Use plural _gpios node label for PMIC gpios

arm64: dts: qcom: Use plural _gpios node label for PMIC gpios

The gpio node in PMIC dts'es define access to multiple GPIOs.  Most Qcom
PMICs were already using the plural _gpios label to point to this node,
but a few PMICs were left behind including the recently-pulled
pm(i)8950.

Rename it from *_gpio to *_gpios for pm6125, pm6150(l), pm8005,
pm(i)8950, and pm(i)8998.

Signed-off-by: Marijn Suijten <[email protected]>
Acked-by: Konrad Dybcio <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]