alpha: Fix typo in ev6-copy_user.S

Patch 85250231 introduced a typo.

That said, the identity AND insns added by that patch are more
clearly written as MOV.  At the same time, re-schedule the ev6
version so that the first dispatch can execute in parallel.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Matt Turner <mattst88@gmail.com>

arch/alpha/lib/copy_user.S

@@ -34,7 +34,7 @@
 	.ent __copy_user
 __copy_user:
 	.prologue 0
-	and $18,$18,$0
+	mov $18,$0
 	and $16,7,$3
 	beq $0,$35
 	beq $3,$36

arch/alpha/lib/ev6-copy_user.S

@@ -45,9 +45,10 @@
 				# Pipeline info: Slotting & Comments
 __copy_user:
 	.prologue 0
-	andq $18, $18, $0
-	subq $18, 32, $1	# .. E  .. ..	: Is this going to be a small copy?
-	beq $0, $zerolength	# U  .. .. ..	: U L U L
+	mov $18, $0		# .. .. .. E
+	subq $18, 32, $1	# .. .. E. ..	: Is this going to be a small copy?
+	nop			# .. E  .. ..
+	beq $18, $zerolength	# U  .. .. ..	: U L U L
 
 	and $16,7,$3		# .. .. .. E	: is leading dest misalignment
 	ble $1, $onebyteloop	# .. .. U  ..	: 1st branch : small amount of data