imx6: enable PCIe (4.19)

The DWC host controller symbols are now depending on a few others

Fixes: ca1b93f038 ("imx6: add support for kernel 4.19")
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>

target/linux/imx6/config-4.19

@@ -213,6 +213,8 @@ CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
 CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
 CONFIG_GENERIC_IRQ_SHOW=y
 CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
 CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_GENERIC_PINCONF=y
 CONFIG_GENERIC_PINCTRL_GROUPS=y
@@ -388,9 +390,16 @@ CONFIG_PAGE_OFFSET=0x80000000
 CONFIG_PCI=y
 CONFIG_PCIEAER=y
 CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_DW=y
+CONFIG_PCIE_DW_HOST=y
+CONFIG_PCIE_DW_PLAT=y
+CONFIG_PCIE_DW_PLAT_HOST=y
 CONFIG_PCIE_PME=y
 CONFIG_PCI_DOMAINS=y
 CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_IMX6=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
 # CONFIG_PCI_V3_SEMI is not set
 CONFIG_PERF_USE_VMALLOC=y
 CONFIG_PGTABLE_LEVELS=2