dt-bindings: interconnect: qcom,msm8998-bwmon: Allow 'nonposted-mmio'

dt-bindings: interconnect: qcom,msm8998-bwmon: Allow 'nonposted-mmio'

One of the BWMON instances on SM8750 requires that its MMIO space is
mapped specifically with the nE memory attribute.

Allow the nonposted-mmio property which instructs the OS to do so.

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250716-8750_cpubwmon-v4-1-12212098e90f@oss.qualcomm.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>