ARM: dts: msm: Add qcom prefix to active clock names property

This change corrects adding "qcom" prefix to
active-clock-names dt property since it is
qcom specific.

Change-Id: I734d446fb64cc6e1bae997439cae60bc19a480d3
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>