xed-operand-width.txt: add common types as oc2 codes

* oc2 codes were originally the 2nd code that we'd get
     out of the old SDM opcode map. It was for the type.
     Things like ps,pd,d,q, etc.

   * This commit ads {i,u}{8,16,32,64} and f{16,32,64} as oc2 types
     that translate to themselves as the lower level element types
     (xtypes).

Change-Id: I0080f676d29f42f68d82392b41fbf4de7c0195ad
(cherry picked from commit 4691aa01f0e5ff678df0391efc70ddbfaf2b4b80)

datafiles/xed-operand-width.txt

@@ -42,6 +42,18 @@ a32         i32       8  # bound
 b           u8        1
 d           i32       4
 #
+i8          i8        1
+u8          u8        1
+i16         i16       2
+u16         u16       2
+i32         i32       4
+u32         u32       4
+i64         i64       8
+u64         u64       8
+f16         f16       2  # IVB converts
+f32         f32       4
+f64         f64       8 
+#
 dq          i32      16
 #
 xub        u8        16