CPU6 and CPU7 were mistakengly pointing to CPU5 reg. Fix it.

Fixes: 02d8091b ("arm64: dts: qcom: msm8994: Add a proper CPU map")
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220501184016.64138-1-konrad.dybcio@somainline.org