syscalls: fix syscall macros for newfstat/newfstatat

The __NR_newfstat and __NR_newfstatat macros accidentally got renamed
in the conversion to the syscall.tbl format, dropping the 'new' portion
of the name.

In an unrelated change, the two syscalls are no longer architecture
specific but are once more defined on all 64-bit architectures, so the
'newstat' ABI keyword can be dropped from the table as a simplification.

Fixes: Fixes: 4fe53bf2 ("syscalls: add generic scripts/syscall.tbl")
Closes: https://lore.kernel.org/lkml/838053e0-b186-4e9f-9668-9a3384a71f23@app.fastmail.com/T/#tReported-by: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/kernel/Makefile.syscalls

 # SPDX-License-Identifier: GPL-2.0
 
 syscall_abis_32 +=
-syscall_abis_64 += renameat newstat rlimit memfd_secret
+syscall_abis_64 += renameat rlimit memfd_secret
 
 syscalltbl = arch/arm64/tools/syscall_%.tbl

arch/loongarch/kernel/Makefile.syscalls

 # SPDX-License-Identifier: GPL-2.0
 
-syscall_abis_64 += newstat
+# No special ABIs on loongarch so far
+syscall_abis_64 +=

arch/riscv/kernel/Makefile.syscalls

 # SPDX-License-Identifier: GPL-2.0
 
 syscall_abis_32 += riscv memfd_secret
-syscall_abis_64 += riscv newstat rlimit memfd_secret
+syscall_abis_64 += riscv rlimit memfd_secret

scripts/syscall.tbl

@@ -98,9 +98,9 @@
 77	common	tee				sys_tee
 78	common	readlinkat			sys_readlinkat
 79	stat64	fstatat64			sys_fstatat64
-79	newstat	fstatat				sys_newfstatat
+79	64	newfstatat			sys_newfstatat
 80	stat64	fstat64				sys_fstat64
-80	newstat	fstat				sys_newfstat
+80	64	newfstat			sys_newfstat
 81	common	sync				sys_sync
 82	common	fsync				sys_fsync
 83	common	fdatasync			sys_fdatasync