perf arch powerpc: Sync powerpc syscall.tbl with the kernel sources

Copy over powerpc syscall.tbl to grab changes from the below commits

  fddb5d4 ("open: introduce openat2(2) syscall")
  9a2cef0 ("arch: wire up pidfd_getfd syscall")

Now 'perf trace' on powerpc will be able to map from those syscall
strings to the right syscall numbers, i.e.

  perf trace -e pidfd*

Will include 'pidfd_getfd' as well as:

  perf trace open*

Will cover all 'open' variants.

Reported-by: Stephen Rothwell <[email protected]>
Reviewed-by: Ravi Bangoria <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Aleksa Sarai <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Naveen N. Rao <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Sargun Dhillon <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: acmel

tools/perf/arch/powerpc/entry/syscalls/syscall.tbl

@@ -517,3 +517,5 @@
 433	common	fspick				sys_fspick
 434	common	pidfd_open			sys_pidfd_open
 435	nospu	clone3				ppc_clone3
+437	common	openat2				sys_openat2
+438	common	pidfd_getfd			sys_pidfd_getfd