mfd: Add support for twl6041

The delta between twl6040 and twl6041 is small, the main difference is in
the number of GPOs (3 on twl6040, 1 on twl6041).

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h
index 00b330e..eaad49f 100644
--- a/include/linux/mfd/twl6040.h
+++ b/include/linux/mfd/twl6040.h
@@ -163,6 +163,7 @@
 #define TWL6040_REV_ES1_0		0x00
 #define TWL6040_REV_ES1_1		0x01 /* Rev ES1.1 and ES1.2 */
 #define TWL6040_REV_ES1_3		0x02
+#define TWL6041_REV_ES2_0		0x10
 
 #define TWL6040_IRQ_TH			0
 #define TWL6040_IRQ_PLUG		1