msm: Fix compile error due to incorrect include path

Trace header file location moved under <mach> to
fix cross compilations error.

Crs-fixed: 447863
Change-Id: Icb00dc6ebdba715ad1c432e2a8a9b34fcf3a08bd
Signed-off-by: Hanumant Singh <hanumant@codeaurora.org>