ptp: ocp: Have Kconfig select NET_DEVLINK

NET doesn't imply NET_DEVLINK.  Select this separately, so that
random config combinations don't complain.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 773bda96 ("ptp: ocp: Expose various resources on the timecard.")
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/ptp/Kconfig

@@ -177,6 +177,7 @@ config PTP_1588_CLOCK_OCP
 	imply MTD_SPI_NOR
 	imply I2C_XILINX
 	select SERIAL_8250
+	select NET_DEVLINK
 
 	default n
 	help