fix rename pow and exp for nvidia

Change-Id: Iecd9b1f45dee91427bb662f35ca84228be3131b6
Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>
Re-add nvidia

Change-Id: Ia7db4223073fd5d571e10525f83a6bdbf8642048
Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>
enable nvidia definitions by default

Change-Id: Ibdfd2582301175810763e911c4aff2b6bd2720b8
Signed-off-by: Hieu Phan <aznrice2k4@gmail.com>