dt-bindings: power: qcom,rpmpd: Format RPMh levels better

After adding the missing levels with a nice, easy-to-read diff,
reformat the defines to make them nice to look at..
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230517-topic-kailua-rpmhpd-v2-2-3063ce19c491@linaro.org