This patch makes the following:
 - Adds missing wakeup padding register handling.
 - Fixes a hardcode to use PER module ONLY on UART3.
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NGovindraj.R <govindraj.raja@ti.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>