serial: max3107: introduce a max3107 driver

This device is used by some of the Intel MID platforms. It's not similar
enough to the MAX3100 to use the same driver.

At this point the driver is specific to the platform and not generalised.
We will fix that later.
Signed-off-by: jianwei.yang <jianwei.yang@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/serial/Kconfig

@@ -542,6 +542,14 @@ config SERIAL_S5PV210
 	help
 	  Serial port support for Samsung's S5P Family of SoC's
 
+config SERIAL_MAX3107
+	tristate "MAX3107 support"
+	depends on SPI && GPIOLIB
+	select SERIAL_CORE
+	default y
+	help
+	  MAX3107 chip support
+
 config SERIAL_MAX3100
 	tristate "MAX3100 support"
 	depends on SPI

drivers/serial/Makefile

@@ -46,6 +46,7 @@ obj-$(CONFIG_SERIAL_S3C24A0) += s3c24a0.o
 obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
 obj-$(CONFIG_SERIAL_S5PV210) += s5pv210.o
 obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
+obj-$(CONFIG_SERIAL_MAX3107) += max3107.o
 obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
 obj-$(CONFIG_SERIAL_MUX) += mux.o
 obj-$(CONFIG_SERIAL_68328) += 68328serial.o