Copy over powerpc syscall.tbl to grab changes from the below commits:
commit cee3536d24 ("powerpc: Wire up clone3 syscall")
commit 1a271a68e0 ("arch: mark syscall number 435 reserved for clone3")
commit 7615d9e178 ("arch: wire-up pidfd_open()")
commit d8076bdb56 ("uapi: Wire up the mount API syscalls on non-x86 arches [ver #2]")
commit 39036cd272 ("arch: add pidfd and io_uring syscalls everywhere")
commit 48166e6ea4 ("y2038: add 64-bit time_t syscalls to all 32-bit architectures")
commit d33c577ccc ("y2038: rename old time and utime syscalls")
commit 00bf25d693 ("y2038: use time32 syscall names on 32-bit")
commit 8dabe7245b ("y2038: syscalls: rename y2038 compat syscalls")
commit 0d6040d468 ("arch: add split IPC system calls where needed")
Reported-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20190827071458.19897-1-naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>