esoc: Ignore waiting for the modem status to go low.

When the esoc driver sends the sysmon-shutdown command to the
modem, it starts it's shutdown process. Then the APQ waits for
the modem status to come low. When it comes low, the modem sees
that the reset line is still held high by the APQ and starts a
powerup sequence again, which is incorrect.

By ignoring the path where the modem's status line is checked,
this situation is avoided. As soon as the esoc driver receives
the sysmon response from the modem, it would now pull the reset line
low, thus turning-off the modem completely.

Change-Id: I98454a49e858eccfbc9a39bfd642f2de691e7834
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>