Bump syscalls numbers to preserve KBI.

Syscalls added:
546 AUE_FSTAT STD { int fstat(...); }
547 AUE_FSTATAT STD { int fstatat(...); }
548 AUE_FHSTAT STD { int fhstat(...); }
549 AUE_GETDIRENTRIES STD { ssize_t getdirentries(...); }
550 AUE_MKNODAT STD { int mknodat(...); }
551 AUE_GETFSSTAT STD { int getfsstat(...); }
552 AUE_STATFS STD { int statfs(...); }
553 AUE_FSTATFS STD { int fstatfs(...); }
554 AUE_FHSTATFS STD { int fhstatfs(...); }

Update 32-bit syscalls table.