realtek-rtl8305nb: add MDIO interface alongside I2C; wire to SCL_MDC/SDA_MDIO; bump to 0.1.3; frozen build + verify pass#200

napowderly wants to merge 5 commits intomainatopile/packages:mainfrom

chore/realtek-rtl8305nb-mdioatopile/packages:chore/realtek-rtl8305nb-mdioCopy head branch name to clipboard