serial: msm_geni_serial: Avoid double vote off for console during suspend

Don't make a call to turn off resources in console's suspend callback.

The suspend callback calls into the serial_core's helper functions to
suspend and shutdown the port where the driver votes off the resources
it had requested, so there shouldn't be an extra call to turn off resource
in the suspend callback.

Change-Id: I9d52a96f227cdef1131c1c0f7757ffa4b69a169a
Signed-off-by: Girish Mahadevan <girishm@codeaurora.org>