[PATCH] igc: fix PTP dependency

From: Arnd Bergmann <arnd@arndb.de>

The igc driver was accidentally left out of the Kconfig rework for PTP,
it needs the same dependency as the others:

arm-linux-gnueabi-ld: drivers/net/ethernet/intel/igc/igc_main.o: in function `igc_tsync_interrupt':
igc_main.c:(.text+0x1b288): undefined reference to `ptp_clock_event'
arm-linux-gnueabi-ld: igc_main.c:(.text+0x1b308): undefined reference to `ptp_clock_event'
arm-linux-gnueabi-ld: igc_main.c:(.text+0x1b8cc): undefined reference to `ptp_clock_event'
arm-linux-gnueabi-ld: drivers/net/ethernet/intel/igc/igc_ethtool.o: in function `igc_ethtool_get_ts_info':

Fixes: e5f31552674e ("ethernet: fix PTP_1588_CLOCK dependencies")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/ethernet/intel/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index b0b6f90deb7d..ed8ea63bb172 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig

@@ -335,6 +335,7 @@ config IGC
 	tristate "Intel(R) Ethernet Controller I225-LM/I225-V support"
 	default n
 	depends on PCI
+	depends on PTP_1588_CLOCK_OPTIONAL
 	help
 	  This driver supports Intel(R) Ethernet Controller I225-LM/I225-V
 	  family of adapters.

-- 
2.29.2