ptp_pch: Restore dependency on PCI

During the swap dependency on PCH_GBE to selection PTP_1588_CLOCK_PCH
incidentally dropped the implicit dependency on the PCI. Restore it.

Fixes: 18d359ce ("pch_gbe, ptp_pch: Fix the dependency direction between these drivers")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/ptp/Kconfig

@@ -90,7 +90,8 @@ config PTP_1588_CLOCK_INES
 config PTP_1588_CLOCK_PCH
 	tristate "Intel PCH EG20T as PTP clock"
 	depends on X86_32 || COMPILE_TEST
-	depends on HAS_IOMEM && NET
+	depends on HAS_IOMEM && PCI
+	depends on NET
 	imply PTP_1588_CLOCK
 	help
 	  This driver adds support for using the PCH EG20T as a PTP