Fixed mask generation for subword accesses---right shift amount was too small.
Fixed mask generation for subword accesses---right shift amount was too small.

git-svn-id: 99451debdb524fddc1fd7416b2d2371ddbb8156c@121 d8c8c26f-3c19-d1f2-4759-8dc24d6bf138

jaingaurav/rstm,jaingaurav/rstm,jaingaurav/rstm,jaingaurav/rstm