Since the current driver enable AWAKE before system suspend in default,
after suspend, if user click console keys, it generates AWAKE interrupt,
in the irq handler, there have register access that cause system hang
since uart module/ipg clocks are disabled, and system cannot resume back.
This reverts commit 17e8a89dd95f8e777dd21dbb0c28eda0f4a69ba4.
Signed-off-by: Fugang Duan <B38611@freescale.com>
06cb621766