WIP: PBNRR GPU BlockMatching

Original implementation

Change-Id: I30e42471f5a84ed8dba66bb7bca608765e8e0931
Merge branch 'PBNRR-GPUBlockMatching' into localgithubdev

Change-Id: I4572dff312e118e45a3f7e9abce0d07bf182b028