arm64: make label allocation style consistent in tishift

This is entirely cosmetic, but somehow it was missed when sending
differing versions of this patch. This just makes the file a bit more
uniform.
Signed-off-by: NJason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

arch/arm64/lib/tishift.S

@@ -38,19 +38,19 @@ ENTRY(__ashlti3)
 ENDPROC(__ashlti3)
 
 ENTRY(__ashrti3)
-	cbz	x2, 3f
+	cbz	x2, 1f
 	mov	x3, #64
 	sub	x3, x3, x2
 	cmp	x3, #0
-	b.le	4f
+	b.le	2f
 	lsr	x0, x0, x2
 	lsl	x3, x1, x3
 	asr	x2, x1, x2
 	orr	x0, x0, x3
 	mov	x1, x2
-3:
+1:
 	ret
-4:
+2:
 	neg	w0, w3
 	asr	x2, x1, #63
 	asr	x0, x1, x0