e1000_mng_enable_host_if

This function checks whether the HOST IF is enabled for command operaton

static int32_t e1000_mng_enable_host_if(
　　struct e1000_hw * hw
)

hw

This function checks whether the HOST IF is enabled for command operaton
and also checks whether the previous command is completed.
It busy waits in case of previous command is not completed.