brgphy: reset autonegotiation timer when we get the link

[Mike Belopuhov]

from freebsd. ok?

diff --git sys/dev/mii/brgphy.c sys/dev/mii/brgphy.c
index 7f0bae2..461c798 100644
--- sys/dev/mii/brgphy.c
+++ sys/dev/mii/brgphy.c
@@ -412,8 +412,10 @@ setit:
                 * the BMSR twice in case it's latched.
                 */
                reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
-               if (reg & BMSR_LINK)
+               if (reg & BMSR_LINK) {
+                       sc->mii_ticks = 0;      /* Reset autoneg timer. */
                        break;
+               }
 
                /*
                 * Only retry autonegotiation every mii_anegticks seconds.