[PATCH] LiquidIO VF: s/select/imply/ for PTP_1588_CLOCK

[Nicolas Pitre]

Fix a minor fallout from the merge of the timers and the networking 
trees. The following error may result if the PTP_1588_CLOCK 
prerequisites are not available:

drivers/built-in.o: In function `ptp_clock_unregister':
(.text+0x40e0a5): undefined reference to `pps_unregister_source'
drivers/built-in.o: In function `ptp_clock_unregister':
(.text+0x40e0cc): undefined reference to `posix_clock_unregister'
drivers/built-in.o: In function `ptp_clock_event':
(.text+0x40e249): undefined reference to `pps_event'
drivers/built-in.o: In function `ptp_clock_register':
(.text+0x40e5e1): undefined reference to `pps_register_source'
drivers/built-in.o: In function `ptp_clock_register':
(.text+0x40e62c): undefined reference to `posix_clock_register'
drivers/built-in.o: In function `ptp_clock_register':
(.text+0x40e68d): undefined reference to `pps_unregister_source'

Signed-off-by: Nicolas Pitre <n...@linaro.org>

diff --git a/drivers/net/ethernet/cavium/Kconfig 
b/drivers/net/ethernet/cavium/Kconfig
index bbc8bd16cb..dcbce6cac6 100644
--- a/drivers/net/ethernet/cavium/Kconfig
+++ b/drivers/net/ethernet/cavium/Kconfig
@@ -77,7 +77,7 @@ config OCTEON_MGMT_ETHERNET
 config LIQUIDIO_VF
        tristate "Cavium LiquidIO VF support"
        depends on 64BIT && PCI_MSI
-       select PTP_1588_CLOCK
+       imply PTP_1588_CLOCK
        ---help---
          This driver supports Cavium LiquidIO Intelligent Server Adapter
          based on CN23XX chips.