Revert "serial: serial_xen: add DEBUG_UART support"

This reverts commit 82e21b391bd315f6fe0e0b79326af8a141e9cca7.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index b6ba702..b4805a2 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -401,19 +401,11 @@
 	  driver will be available until the real driver model serial is
 	  running.
 
-config DEBUG_UART_XEN
-	bool "XEN Hypervisor Console"
-	depends on XEN_SERIAL
-	help
-	  Select this to enable a debug UART using the serial_xen driver. You
-	  will not have to provide any parameters to make this work. The driver
-          will be available until the real driver-model serial is running.
-
 endchoice
 
 config DEBUG_UART_BASE
 	hex "Base address of UART"
-	depends on DEBUG_UART && !DEBUG_UART_XEN
+	depends on DEBUG_UART
 	default 0 if DEBUG_UART_SANDBOX
 	help
 	  This is the base address of your UART for memory-mapped UARTs.
@@ -423,7 +415,7 @@
 
 config DEBUG_UART_CLOCK
 	int "UART input clock"
-	depends on DEBUG_UART && !DEBUG_UART_XEN
+	depends on DEBUG_UART
 	default 0 if DEBUG_UART_SANDBOX
 	help
 	  The UART input clock determines the speed of the internal UART
@@ -435,7 +427,7 @@
 
 config DEBUG_UART_SHIFT
 	int "UART register shift"
-	depends on DEBUG_UART && !DEBUG_UART_XEN
+	depends on DEBUG_UART
 	default 0 if DEBUG_UART
 	help
 	  Some UARTs (notably ns16550) support different register layouts