This change updates the qcom stats node with proper
compatible string. Also, removes the subsystem-sleep-stats
and qcom,rpm-master-stats nodes which are deprecated.
Change-Id: I71b653ef539ccc757f4fb79413c539bbdee56d53
Signed-off-by: Raghavendra Kakarla <quic_rkakarla@quicinc.com>