Yeah, it works for me:
Grabbed this image:
https://rcn-ee.net/rootfs/bb.org/testing/2018-01-14/stretch-iot/
added
uboot_overlay_addr0=/lib/firmware/PB-SPI1-ETH-WIZ-CLICK.dtbo
to /boot/uEnv.txt
then ssh'ed thru the eth0 interface..
debian@beaglebone:~$ sudo ifconfig -a eth0
eth0: flags=-28605<UP,BROADCAST,RUNNING,MULTICAST,DYNAMIC> mtu 1500
inet 192.168.0.149 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 fe80::94fb:95ff:fee3:4270 prefixlen 64 scopeid 0x20<link>
ether 96:fb:95:e3:42:70 txqueuelen 1000 (Ethernet)
RX packets 181 bytes 25287 (24.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 145 bytes 26141 (25.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
debian@beaglebone:~$ sudo /opt/scripts/tools/version.sh
git:/opt/scripts/:[b372df3221bb67a9a09c6b89df5110ca32a9e482]
eeprom:[A335PBGL00A21736GPB30111]
model:[TI_AM335x_PocketBeagle]
dogtag:[BeagleBoard.org Debian Image 2018-01-14]
bootloader:[microSD]:[/dev/mmcblk0]:[U-Boot 2018.01-00002-gcc9c2d1992]
kernel:[4.9.76-ti-r91]
nodejs:[v6.12.3]
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/PB-SPI1-ETH-WIZ-CLICK.dtbo]
uboot_overlay_options:[enable_uboot_cape_universal=1]
pkg:[bb-cape-overlays]:[4.4.20180104.0-0rcnee1~stretch+20180104]
pkg:[bb-wl18xx-firmware]:[1.20170829-0rcnee2~stretch+20180104]
pkg:[firmware-ti-connectivity]:[20170823-1rcnee0~stretch+20170830]
dmesg | grep pinctrl-single
[ 1.436073] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
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