Add to read efuse values from flash, and disable EEE to improve signal
quality. Remove PHY semaphore to access PHY registers faster. And remove
unnecessary page selection where quick access is required.
When rte_eth_link_get_nowait() is called frequently with LSC disabled by
self-developed applications, eventually the PHY status register will be
accessed frequently. It will cause internal PHY init failure, if they
are done simultaneously. So there is a protection added for internal PHY
init.