RISC-V: Update syscall list for 32-bit support.

32-bit RISC-V uses _llseek instead of lseek as syscall number 62.
Update syscall list from open-embedded build, primarily because
32-bit RISC-V requires statx support.

Tested with cross gcc testsuite runs for rv32 and rv64, with the
pending statx patch also applied.

Signed-off-by: Jim Wilson <jimw@sifive.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

linux-user/riscv/syscall_nr.h

@@ -72,7 +72,11 @@
 #define TARGET_NR_pipe2 59
 #define TARGET_NR_quotactl 60
 #define TARGET_NR_getdents64 61
+#ifdef TARGET_RISCV32
+#define TARGET_NR__llseek 62
+#else
 #define TARGET_NR_lseek 62
+#endif
 #define TARGET_NR_read 63
 #define TARGET_NR_write 64
 #define TARGET_NR_readv 65
@@ -286,7 +290,16 @@
 #define TARGET_NR_membarrier 283
 #define TARGET_NR_mlock2 284
 #define TARGET_NR_copy_file_range 285
+#define TARGET_NR_preadv2 286
+#define TARGET_NR_pwritev2 287
+#define TARGET_NR_pkey_mprotect 288
+#define TARGET_NR_pkey_alloc 289
+#define TARGET_NR_pkey_free 290
+#define TARGET_NR_statx 291
+#define TARGET_NR_io_pgetevents 292
+#define TARGET_NR_rseq 293
+#define TARGET_NR_kexec_file_load 294
 
-#define TARGET_NR_syscalls (TARGET_NR_copy_file_range + 1)
+#define TARGET_NR_syscalls (TARGET_NR_kexec_file_load + 1)
 
 #endif