net: phy: broadcom: fix BCM54XX_SHD_SCR3_TRDDAPD value for BCM54810

Set the correct bit when checking for PHY_BRCM_DIS_TXCRXC_NOENRGY on the
BCM54810 PHY.

Fixes: 0ececcfc

 ("net: phy: broadcom: Allow BCM54810 to use bcm54xx_adjust_rxrefclk()")
Signed-off-by: Kevin Lo <kevlo@kevlo.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>