Kconfig: Migrate CONFIG_BAUDRATE

Move this in to Kconfig with a default of 115200.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
[trini: Run moveconfig.py, reword commit slightly]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 7cb0eaa..ca56a7e 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -4,6 +4,15 @@
 
 menu "Serial drivers"
 
+config BAUDRATE
+	int "Default baudrate"
+	default 115200
+	help
+	  Select a default baudrate, where "default" has a driver-specific
+	  meaning of either setting the baudrate for the early debug UART
+	  in the SPL stage (most drivers) or for choosing a default baudrate
+	  in the absence of an environment setting (serial_mxc.c).
+
 config REQUIRE_SERIAL_CONSOLE
 	bool "Require a serial port for console"
 	# Running without a serial console is not supported by the