sh: add statx system call

statx is available on almost all other architectures but
got missed on sh, so add it now.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/sh/kernel/syscalls/syscall.tbl

@@ -390,3 +390,4 @@
 380	common	copy_file_range			sys_copy_file_range
 381	common	preadv2				sys_preadv2
 382	common	pwritev2			sys_pwritev2
+383	common	statx				sys_statx