eth: fbnic: select DEVLINK and PAGE_POOL

eth: fbnic: select DEVLINK and PAGE_POOL

Build bot reports undefined references to devlink functions.
And local testing revealed undefined references to page_pool functions.

Based on a patch by Jakub Kicinski <kuba@kernel.org>

Fixes: 1a9d48892ea5 ("eth: fbnic: Allocate core device specific structures and devlink interface")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202408011219.hiPmwwAs-lkp@intel.com/
Signed-off-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240802-fbnic-select-v2-1-41f82a3e0178@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>