i2c-viapro: Add support for the VT8237S

Add support for another variant of the VT8237. I couldn't test
I2C block support but I assume it is present as well.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index a38ba04..8d12b26 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -606,7 +606,7 @@
 	    VT8231
 	    VT8233/A
 	    VT8235
-	    VT8237R/A
+	    VT8237R/A/S
 	    VT8251
 	    CX700