mfd: fusb302: ignored the timeout if vdm got the message.

mfd: fusb302: ignored the timeout if vdm got the message.

The PD spec define the source should ensure that a message requesting
a response is responded within 30ms(tSenderResponse). But if the
message responded is received close to 30ms, we may hit the case:

tcpm_get_message(); //get the data and close to 30ms
	... takes about 600us, meanwhile the 30ms timer came.
auto_vdm_machine
	vdm_send... //we get the message, but timeout.

So, let's ignored the timeout if we get the message.

Change-Id: I64ced1bd2d32d8ef996dcec27cf35c3e333386f8
Signed-off-by: zain wang <wzz@rock-chips.com>