edac: device: Use poll_msec from registered edac device instead of default

Use the poll_msec set by the driver that registreed an edac device
to define the poll time for how often the edac_check callback function
should be scheduled.

Change-Id: I973d7fb966cb9f6f9497510df5de000d4f8ffcba
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>