ARM: dts: qcom: replace status value "ok" by "okay"

While the DT parser recognizes "ok" as a valid value for the
"status" property, it is actually mentioned nowhere. Use the
proper value "okay" instead, as done in the majority of files
already.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Link: https://lore.kernel.org/r/20200830191643.20717-1-freifunk@adrianschmutzler.de


[bjorn: Rebased and included fixup of sdx55-mtp]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>