i2c: synquacer: SNI Synquacer I2C controller

Add driver for class of I2C controllers found on
Socionext Synquacer platform.

Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 57a4efb..ce0d796 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -455,6 +455,13 @@
 	   _ Optional clock stretching
 	   _ Software reset
 
+config SYS_I2C_SYNQUACER
+	bool "Socionext SynQuacer I2C controller"
+	depends on ARCH_SYNQUACER && DM_I2C
+	help
+	  Support for Socionext Synquacer I2C controller. This I2C controller
+	  will be used for RTC and LS-connector on DeveloperBox.
+
 config SYS_I2C_TEGRA
 	bool "NVIDIA Tegra internal I2C controller"
 	depends on ARCH_TEGRA