mmc: sdhci-msm: Add tracepoints to enhance pm debugging

Instrument the sdhci-msm platform driver with tracepoints to aid in
debugging issues and identifying latencies in the following
paths:
* System suspend/resume
* Runtime suspend/resume

Change-Id: I4fed1c2ccba7d5d7f978f161e7985c98e869d1d8
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>