pci: Move CONFIG_PCI_PNP to Kconfig

Introduce CONFIG_PCI_PNP in Kconfig and move over boards' defconfig
to use that.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[trini: Re-generate configs and include/configs/ changes]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/gdppc440etx_defconfig b/configs/gdppc440etx_defconfig
index 4f6d328..3fc9261 100644
--- a/configs/gdppc440etx_defconfig
+++ b/configs/gdppc440etx_defconfig
@@ -17,5 +17,6 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_CACHE=y
+# CONFIG_PCI_PNP is not set
 CONFIG_SYS_NS16550=y
 CONFIG_OF_LIBFDT=y