ixgbe/base: check for functional CS4227 ucode

During init, check the ucode running in the CS4227. If
it is not responding correctly, reset the part. This is
a global reset so it must only be done the first time a
driver loads after power-on.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>