syscall-list: update syscall tables

This adds fstatat (and its friends), llseek, and uretprobe.

src/basic/syscalls-riscv32.txt

@@ -95,6 +95,7 @@ fsopen	430
 fspick	433
 fstat
 fstat64
+fstatat
 fstatat64
 fstatfs
 fstatfs64	44
@@ -191,6 +192,7 @@ listen	201
 listmount	458
 listxattr	11
 llistxattr	12
+llseek	62
 lookup_dcookie	18
 lremovexattr	15
 lseek
@@ -245,6 +247,7 @@ munlockall	231
 munmap	215
 name_to_handle_at	264
 nanosleep
+newfstat
 newfstatat
 nice
 old_adjtimex
@@ -502,6 +505,7 @@ uname	160
 unlink
 unlinkat	35
 unshare	97
+uretprobe
 userfaultfd	282
 ustat
 utime