ARM: dts: Remove usage of active-only flag with usb bus voting

USB HW blocks would use the PNOC bus independent of the power collapse
state of the CPU. Making bus vote with active-only will cause the vote
to be removed by RPM when CPU gets into power collapse state.

Active-only flag usage has been change with Linux Bus driver commit
4bde895e3 (arm/dt: msm_bus: Update the active-only property to Boolean
type). Hence by default client's active bus configuration would be ignore
when processor is put into asleep. With this it is not required to
explicitly request to disable this functionality by each PNOC Bus client.
USB doesn't need to enable this feature as USB prevents idle power collapse
and doesn't allow system suspend if it is operational. Hence remove usage
of active-only flag with usb bus voting.

CRs-Fixed: 546180
Change-Id: I855dd72922fe03564de316cdd4c370774bc8d97c
Signed-off-by: Mayank Rana <mrana@codeaurora.org>