OxPCIe uart: Move under drivers/uart

This driver is only a thin shell for uart8250mem and we could extend it
with further compatible PCI IDs from other vendors/brands.

Change-Id: Ic115b1baa0be0dbaa81e4a17a2e466019d3f4a67
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5329
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/drivers/uart/Kconfig b/src/drivers/uart/Kconfig
index 889c69a..a979437 100644
--- a/src/drivers/uart/Kconfig
+++ b/src/drivers/uart/Kconfig
@@ -21,6 +21,17 @@
 	bool
 	default n
 
+config DRIVERS_UART_OXPCIE
+	bool "Oxford OXPCIe952"
+	default n
+	depends on PCI
+	select DRIVERS_UART_8250MEM
+	select EARLY_PCI_BRIDGE
+	help
+	  Support for Oxford OXPCIe952 serial port PCIe cards.
+	  Currently only devices with the vendor ID 0x1415 and device ID
+	  0xc158 or 0xc11b will work.
+
 config DRIVERS_UART_PL011
 	bool
 	default n