includes/utils.h: add r_trace() function for even more details
includes/utils.h: add r_trace() function for even more details

This one might be used for printing output that is even more
fine-grained than what g_debug should show.

Can be used to dump algorithm internals, etc.

Signed-off-by: Enrico Joerns <a2e5f936c390f36494e46e71bcfbe365bb1e8c49@pengutronix.de>

jluebbe/rauc,ejoerns/rauc,ejoerns/rauc,jluebbe/rauc,rauc/rauc,rauc/rauc,jluebbe/rauc,ejoerns/rauc,rauc/rauc