ti_config_fragments/connectivity.cfg: Enable ICSSG Ethernet driver

This is to support ICSSG Ethernet ports on AM65 GP-EVM and IDK.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

ti_config_fragments/connectivity.cfg

@@ -36,6 +36,7 @@ CONFIG_TI_CPSW_ALE=y
 CONFIG_TI_CPSW=y
 CONFIG_TI_CPTS=y
 CONFIG_TI_PRUETH=m
+CONFIG_TI_ICSSG_PRUETH=m
 # non-TI Net vendors
 CONFIG_NET_DSA_BCM_SF2=n
 CONFIG_B53=n