Pass MIIF_DOPAUSE mask to mii_attach() in if_emac.c. emac(4) change a
register from IFM_FLOW flag, so this change is required to control the
setting via ifconfig. PR#48950. OK'd by matt@.
don't depend on expandtc to open the database or not.
Change ARM ELF_MAXPAGESIZE to 0x10000 and also change TEXT_START_ADDR for
nbsd to 0x10000.
Use the right macro in dwc2_root_intr_start