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 8acacc40 ("net: ethernet:
ti: am65-cpsw: Add minimal XDP support")

Fixes: 8acacc40 ("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>