arm/dts: hammerhead: Remove erroneous qcom,msm-bus,active-only property

qcom,msm-bus,active-only is a boolean and not an integer. As a
result, setting "active-only = <0>" was actually enabling it.

Reference: kernel_msm, commit ba514f1fceb1b507a70bceb4c52bfc1bb920adf2

Change-Id: Ib4f5738fae71acf729ca402b051499c1fedd9161
Signed-off-by: Dan Trifan <jimsth@gmail.com>