media: dt-bindings: qcom,x1e80100-camss: Fix typo in CSIPHY supply description

media: dt-bindings: qcom,x1e80100-camss: Fix typo in CSIPHY supply description

Correct description of the CSIPHY 1.2 V supply
("vdd-csiphy-1p2-supply"), because it supplies 1.2 V, confirmed with DTS
on the mailing lists.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>