MIPS: futex: Restore \n after sync instructions

Commit 3c1d3f09 ("MIPS: futex: Emit Loongson3 sync workarounds
within asm") inadvertently removed the newlines following
__WEAK_LLSC_MB, which causes build failures for configurations in which
__WEAK_LLSC_MB expands to a sync instruction:

  {standard input}: Assembler messages:
  {standard input}:9346: Error: symbol `sync3' is already defined
  {standard input}:9380: Error: symbol `sync3' is already defined
  ...

Fix this by restoring the newlines to separate the sync instruction from
anything following it (such as the 3: label), preventing inadvertent
concatenation.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: 3c1d3f09 ("MIPS: futex: Emit Loongson3 sync workarounds within asm")

arch/mips/include/asm/futex.h

@@ -33,7 +33,7 @@
 		"	.set	arch=r4000			\n"	\
 		"2:	sc	$1, %2				\n"	\
 		"	beqzl	$1, 1b				\n"	\
-		__stringify(__WEAK_LLSC_MB)				\
+		__stringify(__WEAK_LLSC_MB) "			\n"	\
 		"3:						\n"	\
 		"	.insn					\n"	\
 		"	.set	pop				\n"	\
@@ -63,7 +63,7 @@
 		"	.set	"MIPS_ISA_ARCH_LEVEL"		\n"	\
 		"2:	"user_sc("$1", "%2")"			\n"	\
 		"	beqz	$1, 1b				\n"	\
-		__stringify(__WEAK_LLSC_MB)				\
+		__stringify(__WEAK_LLSC_MB) "			\n"	\
 		"3:						\n"	\
 		"	.insn					\n"	\
 		"	.set	pop				\n"	\
@@ -148,7 +148,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 		"	.set	arch=r4000				\n"
 		"2:	sc	$1, %2					\n"
 		"	beqzl	$1, 1b					\n"
-		__stringify(__WEAK_LLSC_MB)
+		__stringify(__WEAK_LLSC_MB) "				\n"
 		"3:							\n"
 		"	.insn						\n"
 		"	.set	pop					\n"