net: bnx2x: fix build error with ptp

From: Randy Dunlap <[email protected]>

bnx2x uses ptp functions, so it should select the provider of those functions (PTP_1588_CLOCK). Fixes these build errors:

drivers/built-in.o: In function `__bnx2x_remove':
/home/jim/linux/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:13409:
undefined reference to ptp_clock_unregister' drivers/built-in.o: In function bnx2x_register_phc':
/home/jim/linux/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c:13202:
undefined reference to ptp_clock_register' drivers/built-in.o: In function bnx2x_get_ts_info':
/home/jim/linux/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c:3498:
undefined reference to `ptp_clock_index'

Reported-by Jim Davis <[email protected]>

Signed-off-by Randy Dunlap <[email protected]>

---
 drivers/net/ethernet/broadcom/Kconfig |    1 +
 1 file changed, 1 insertion(+)

Index: linux-next-20140825/drivers/net/ethernet/broadcom/Kconfig
===================================================================

drivers/net/ethernet/broadcom/Kconfig +1 -1

@@ -122,6 +122,7 @@ config TIGON3
 config BNX2X
 	tristate "Broadcom NetXtremeII 10Gb support"
 	depends on PCI
+	select PTP_1588_CLOCK
 	select FW_LOADER
 	select ZLIB_INFLATE
 	select LIBCRC32C
--

Note: This patch fixes a build error in linux-next (not in mainline).