[x86] Rename MOVSD/STOSD/LODSD/OUTSD to MOVSL/STOSL/LODSL/OUTSL

The disassembler has a special case for 'L' vs. 'W' in its heuristic for
checking for 32-bit and 16-bit equivalents. We could expand the heuristic,
but better just to be consistent in using the 'L' suffix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199652 91177308-0d34-0410-b5e6-96231b3b80d8

test/MC/Disassembler/X86/x86-16.txt

@@ -708,10 +708,10 @@
 # CHECK: outsb
 0x6e
 
-# CHECKX: outsw
+# CHECK: outsw
 0x6f
 
-# CHECKX: outsl
+# CHECK: outsl
 0x66 0x6f
 
 # CHECK: insb
@@ -726,28 +726,28 @@
 # CHECK: movsb
 0xa4
 
-# CHECKX: movsw
+# CHECK: movsw
 0xa5
 
-# CHECKX: movsl
+# CHECK: movsl
 0x66 0xa5
 
-# CHECKX: lodsb
+# CHECK: lodsb
 0xac
 
-# CHECKX: lodsw
+# CHECK: lodsw
 0xad
 
-# CHECKX: lodsl
+# CHECK: lodsl
 0x66 0xad
 
 # CHECK: stosb
 0xaa
 
-# CHECKX: stosw
+# CHECK: stosw
 0xab
 
-# CHECKX: stosl
+# CHECK: stosl
 0x66 0xab
 
 # CHECK: strw %ax