[i.MX6][CPLD][driver/seco] Add driver v2.1 for SECO CPLD LPC/GPIO

Add LPC tty device: /dev/lpctty#

drivers/tty/serial/Kconfig

@@ -1538,6 +1538,15 @@ config SERIAL_OWL_CONSOLE
 	  Say 'Y' here if you wish to use Actions Semiconductor S500/S900 UART
 	  as the system console.
 
+config SERIAL_LPC_SIO
+        tristate "SuperIO Serial port via LPC bus"
+        depends on OF
+        depends on SECO_CPLD_FW
+        depends on SERIAL_8250
+        help
+          The QuadMo747 supports the LPC Bridge to communicate with
+                 a superIO which has UART controller.
+
 config SERIAL_RDA
 	bool "RDA Micro serial port support"
 	depends on ARCH_RDA || COMPILE_TEST

drivers/tty/serial/Makefile

@@ -96,3 +96,4 @@ obj-$(CONFIG_SERIAL_MCTRL_GPIO)	+= serial_mctrl_gpio.o
 
 obj-$(CONFIG_SERIAL_KGDB_NMI) += kgdb_nmi.o
 obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
+obj-$(CONFIG_SERIAL_LPC_SIO) += lpc_serial.o