Some trace event formats print PFNs as hex while others print them as
decimal.  This is rather annoying when attempting to grep through traces
to understand what's going on with a particular page.

 $ git grep -ho 'pfn=[0x%lu]\+' include/trace/events/ | sort | uniq -c
      11 pfn=0x%lx
      12 pfn=%lu
       2 pfn=%lx

Printing as hex is in the majority in the trace events, and all the normal
printks in mm/ also print PFNs as hex, so change all the PFN formats in
the trace events to use 0x%lx.

Link: https://lkml.kernel.org/r/20210602092608.1493-1-vincent.whitchurch@axis.comSigned-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jesper Dangaard Brouer <hawk@kernel.org>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>