ftgmac100: remove check on runt messages

This is a ethernet wire limitation not needed in emulation. It breaks
U-Boot n/w stack also.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20180530061711.23673-5-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/net/ftgmac100.c

@@ -822,12 +822,6 @@ static ssize_t ftgmac100_receive(NetClientState *nc, const uint8_t *buf,
         return size;
     }
 
-    if (size < 64 && !(s->maccr & FTGMAC100_MACCR_RX_RUNT)) {
-        qemu_log_mask(LOG_GUEST_ERROR, "%s: dropped runt frame of %zd bytes\n",
-                      __func__, size);
-        return size;
-    }
-
     if (!ftgmac100_filter(s, buf, size)) {
         return size;
     }