y2038: rename old time and utime syscalls

The time, stime, utime, utimes, and futimesat system calls are only
used on older architectures, and we do not provide y2038 safe variants
of them, as they are replaced by clock_gettime64, clock_settime64,
and utimensat_time64.

However, for consistency it seems better to have the 32-bit architectures
that still use them call the "time32" entry points (leaving the
traditional handlers for the 64-bit architectures), like we do for system
calls that now require two versions.

Note: We used to always define __ARCH_WANT_SYS_TIME and
__ARCH_WANT_SYS_UTIME and only set __ARCH_WANT_COMPAT_SYS_TIME and
__ARCH_WANT_SYS_UTIME32 for compat mode on 64-bit kernels. Now this is
reversed: only 64-bit architectures set __ARCH_WANT_SYS_TIME/UTIME, while
we need __ARCH_WANT_SYS_TIME32/UTIME32 for 32-bit architectures and compat
mode. The resulting asm/unistd.h changes look a bit counterintuitive.

This is only a cleanup patch and it should not change any behavior.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>

arch/xtensa/kernel/syscalls/syscall.tbl

@@ -72,8 +72,8 @@
 61	common	fcntl64				sys_fcntl64
 62	common	fallocate			sys_fallocate
 63	common	fadvise64_64			xtensa_fadvise64_64
-64	common	utime				sys_utime
-65	common	utimes				sys_utimes
+64	common	utime				sys_utime32
+65	common	utimes				sys_utimes_time32
 66	common	ioctl				sys_ioctl
 67	common	fcntl				sys_fcntl
 68	common	setxattr			sys_setxattr
@@ -318,7 +318,7 @@
 295	common	readlinkat			sys_readlinkat
 296	common	utimensat			sys_utimensat_time32
 297	common	fchownat			sys_fchownat
-298	common	futimesat			sys_futimesat
+298	common	futimesat			sys_futimesat_time32
 299	common	fstatat64			sys_fstatat64
 300	common	fchmodat			sys_fchmodat
 301	common	faccessat			sys_faccessat