parisc: ditto sys_accept4

tested with test_accept4.c from de11defeSigned-off-by: NKyle McMartin <kyle@mcmartin.ca>

arch/parisc/include/asm/unistd.h

@@ -812,8 +812,9 @@
 #define __NR_rt_tgsigqueueinfo	(__NR_Linux + 317)
 #define __NR_perf_event_open	(__NR_Linux + 318)
 #define __NR_recvmmsg		(__NR_Linux + 319)
+#define __NR_accept4		(__NR_Linux + 320)
 
-#define __NR_Linux_syscalls	(__NR_recvmmsg + 1)
+#define __NR_Linux_syscalls	(__NR_accept4 + 1)
 
 
 #define __IGNORE_select		/* newselect */

arch/parisc/kernel/syscall_table.S

@@ -418,6 +418,7 @@
 	ENTRY_COMP(rt_tgsigqueueinfo)
 	ENTRY_SAME(perf_event_open)
 	ENTRY_COMP(recvmmsg)
+	ENTRY_SAME(accept4)		/* 320 */
 
 	/* Nothing yet */