Add all the changes and files required for turning on coresight ETR for SDM439 32 bit builds. Snapshots for etmv4x.h and debugv8.h are taken from 4.9 commit:1b3405b8 . Change-Id: I1b16180bdd496f87e12c6736b7526c2ecde3502b Signed-off-by: Shilpa Suresh <sbsure@codeaurora.org>