pttc: use snprintf() to construct filenames in p_alloc()
pttc: use snprintf() to construct filenames in p_alloc()

Replace a strcpy()/strcat() sequence with snprintf().

Change-Id: I79a5e5416f5d5da247ceace2519178ff94708bd6
Signed-off-by: Markus Metzger <5f675b2b36595f90898e014b548ff7d9bbff2ab7@intel.com>

01org/processor-trace,01org/processor-trace,01org/processor-trace