perf list: Fix PMU name pai_crypto in perf list on s390

Commit e0b23af ("perf list: Add PMU pai_crypto event
description for IBM z16") introduced the "Processor Activity
Instrumentation" for cryptographic counters for z16. The PMU device
driver exports the counters via sysfs files listed in directory
/sys/devices/pai_crypto.

To specify an event from that PMU, use 'perf stat -e pai_crypto/XXX/'.

However the JSON file mentioned in above commit exports the counter
decriptions in file pmu-events/arch/s390/cf_z16/pai.json.  Rename this
file to pmu-events/arch/s390/cf_z16/pai_crypto.json to make the naming
consistent.

Now 'perf list' shows the counter names under pai_crypto section:

  pai_crypto:

    CRYPTO_ALL
         [CRYPTO ALL. Unit: pai_crypto]
    ...

Output before was

  pai:
    CRYPTO_ALL
         [CRYPTO ALL. Unit: pai_crypto]
    ...

Fixes: e0b23af ("perf list: Add PMU pai_crypto event description for IBM z16")
Signed-off-by: Thomas Richter <[email protected]>
Acked-by: Sumanth Korikkar <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Sven Schnelle <[email protected]>
Cc: Thomas Richter <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: Thomas Richter