kernel: generic: add missing config symbol to 4.19

PCI_V3_SEMI config symbol was found missing in generic kernel config
after ipq806x config refresh to 4.19.

Signed-off-by: Ansuel Smith <[email protected]>
[commit subject and description facelift]
Signed-off-by: Petr Štetiar <[email protected]>

target/linux/generic/config-4.19

@@ -3680,6 +3680,7 @@ CONFIG_PARTITION_ADVANCED=y
 # CONFIG_PCIE_KIRIN is not set
 # CONFIG_PCIE_PTM is not set
 # CONFIG_PCIE_XILINX is not set
+# CONFIG_PCI_V3_SEMI is not set
 # CONFIG_PCIPCWATCHDOG is not set
 # CONFIG_PCI_ATMEL is not set
 # CONFIG_PCI_CNB20LE_QUIRK is not set