[IA64] Enable bpf syscall for ia64

See commit 99c55f7d
   bpf: introduce BPF syscall and maps
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/include/asm/unistd.h

@@ -11,7 +11,7 @@
 
 
 
-#define NR_syscalls			317 /* length of syscall table */
+#define NR_syscalls			318 /* length of syscall table */
 
 /*
  * The following defines stop scripts/checksyscalls.sh from complaining about

arch/ia64/include/uapi/asm/unistd.h

@@ -330,5 +330,6 @@
 #define __NR_renameat2			1338
 #define __NR_getrandom			1339
 #define __NR_memfd_create		1340
+#define __NR_bpf			1341
 
 #endif /* _UAPI_ASM_IA64_UNISTD_H */

arch/ia64/kernel/entry.S

@@ -1778,6 +1778,7 @@ sys_call_table:
 	data8 sys_renameat2
 	data8 sys_getrandom
 	data8 sys_memfd_create			// 1340
+	data8 sys_bpf
 
 	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls
 #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */