arm64: dts: qcom: sm7225-fairphone-fp4: Enable wifi

Configure regulators used by the wifi hardware and enable it.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220325101841.172304-2-luca.weiss@fairphone.com