RFR (XS): 8144657: Invalid format specifiers in jvmci trace messages

[Mikael Vidstedt]

Please review this simple change which updates the format specifiers 
used in a couple of JVMCI_trace_3 calls:

Bug: https://bugs.openjdk.java.net/browse/JDK-8144657
Webrev: http://cr.openjdk.java.net/~mikael/webrevs/8144657/webrev.00/webrev/

narrowOop is a juint, so %p doesn't match, and for the rest of the cases 
PTR_FORMAT+p2i is more in line with the "standard" pattern for printing 
pointers.

Cheers,
Mikael