perf vendor events amd: Add ITLB Instruction Fetch Hits event for zen1

The ITLB Instruction Fetch Hits event isn't documented even in later
zen1 PPRs, but it seems to count correctly on zen1 hardware.

Add it to zen1 group so zen1 users can use the upcoming IC Fetch Miss
Ratio Metric.

The IF1G, 1IF2M, IF4K (Instruction fetches to a 1 GB, 2 MB, and 4K page)
unit masks are not added because unlike zen2 hardware, zen1 hardware
counts all its unit masks with a 0 unit mask according to the old
convention:

  zen1$ perf stat -e cpu/event=0x94/,cpu/event=0x94,umask=0xff/ sleep 1

   Performance counter stats for 'sleep 1':

             211,318      cpu/event=0x94/u
             211,318      cpu/event=0x94,umask=0xff/u

Rome/zen2:

  zen2$ perf stat -e cpu/event=0x94/,cpu/event=0x94,umask=0xff/ sleep 1

   Performance counter stats for 'sleep 1':

                   0      cpu/event=0x94/u
             190,744      cpu/event=0x94,umask=0xff/u

Signed-off-by: Kim Phillips <[email protected]>
Acked-by: Ian Rogers <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]> # on Zen2 only (3900x)
Cc: Alexander Shishkin <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Jin Yao <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: Jon Grimm <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Martin Jambor <[email protected]>
Cc: Martin Liška <[email protected]>
Cc: Michael Petlan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Cc: Vijay Thakkar <[email protected]>
Cc: William Cohen <[email protected]>
Cc: Yunfeng Ye <[email protected]>
Link: http://lore.kernel.org/lkml/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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