byte-cntr: Configure byte-cntr irq as a wake up irq

Configure byte-cntr irq as a wake up irq to ensure that device can
wake up from suspend when the etr data reaches to block_size.

Change-Id: I526069e582329954cc65b5711645423356e4c69a
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>