ANDROID: ftrace: fix function type mismatches

This change fixes indirect call mismatches with function and function
graph tracing, which trip Control-Flow Integrity (CFI) checking.

Bug: 79510107
Bug: 67506682
Bug: 133186739
Change-Id: I5de08c113fb970ffefedce93c58e0161f22c7ca2
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

[AmitP: Fixed rebase conflicts due to upstream commit
        e73e679f ("fgraph: Move function graph specific code into fgraph.c")]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>