arm64: dts: qcom: Correct "gpiio" typo in msm8996-pins

gpiio5 is missspelt in msm8996-pins.dtsi, fix that.

Signed-off-by: Jakob Wuhrer <jakobwuhrer@airmail.cc>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>