cm-t35: add I2C multi-bus support

Enable I2C multi-bus support and config I2C muxes for I2C2 and I2C3.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
diff --git a/board/cm_t35/cm_t35.c b/board/cm_t35/cm_t35.c
index 4c77790..89e6b08 100644
--- a/board/cm_t35/cm_t35.c
+++ b/board/cm_t35/cm_t35.c
@@ -230,6 +230,12 @@
 	/* I2C1 */
 	MUX_VAL(CP(I2C1_SCL),		(IEN  | PTU | EN  | M0)); /*I2C1_SCL*/
 	MUX_VAL(CP(I2C1_SDA),		(IEN  | PTU | EN  | M0)); /*I2C1_SDA*/
+	/* I2C2 */
+	MUX_VAL(CP(I2C2_SCL),		(IEN  | PTU | EN  | M0)); /*I2C2_SCL*/
+	MUX_VAL(CP(I2C2_SDA),		(IEN  | PTU | EN  | M0)); /*I2C2_SDA*/
+	/* I2C3 */
+	MUX_VAL(CP(I2C3_SCL),		(IEN  | PTU | EN  | M0)); /*I2C3_SCL*/
+	MUX_VAL(CP(I2C3_SDA),		(IEN  | PTU | EN  | M0)); /*I2C3_SDA*/
 
 	/* control and debug */
 	MUX_VAL(CP(SYS_32K),		(IEN  | PTD | DIS | M0)); /*SYS_32K*/