net: ethernet: ti: am65-cpsw: select PAGE_POOL

am65-cpsw uses page_pool_dev_alloc_pages(), thus needs PAGE_POOL
selected to avoid linker errors. This is missing since the driver
started to use page_pool helpers in 8acacc4 ("net: ethernet:
ti: am65-cpsw: Add minimal XDP support")

Fixes: 8acacc4 ("net: ethernet: ti: am65-cpsw: Add minimal XDP support")
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/20250224-net-am654-nuss-kconfig-v2-1-c124f4915c92@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/ti/Kconfig

@@ -99,6 +99,7 @@ config TI_K3_AM65_CPSW_NUSS
 	select NET_DEVLINK
 	select TI_DAVINCI_MDIO
 	select PHYLINK
+	select PAGE_POOL
 	select TI_K3_CPPI_DESC_POOL
 	imply PHY_TI_GMII_SEL
 	depends on TI_K3_AM65_CPTS || !TI_K3_AM65_CPTS