csky: Update syscall_trace_enter/exit implementation

Previous syscall_trace implementation couldn't support AUDITSYSCALL and
SYSCALL_TRACEPOINTS. Now we redesign it to support audit_syscall
and syscall_tracepoints just like other archs'.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Dmitry V. Levin <ldv@altlinux.org>
Cc: Arnd Bergmann <arnd@arndb.de>

arch/csky/abiv2/inc/abi/entry.h

@@ -175,4 +175,9 @@
 	lrw	\rx, (PHYS_OFFSET + 0x20000000) | 0xe
 	mtcr	\rx, cr<31, 15>
 .endm
+
+.macro ANDI_R3 rx, imm
+	lsri	\rx, 3
+	andi	\rx, (\imm >> 3)
+.endm
 #endif /* __ASM_CSKY_ENTRY_H */