Binding generator v2 - uses statement - uses of list

Binding generator v2 - uses statement - uses of list

- fix list getter name of leaf "key" and
  do not add list name as prefix of leaf name.
  key "key" ; // -> getKey

  leaf key { // -> getKeyReservedWord
  ....
  }
  leaf key1 { // -> getKey1

Change-Id: I84821fbeb378e2cdd02730a2c9c0da8a288e2e90
Signed-off-by: Jie Han <han.jie@zte.com.cn>