i2c-nomadik: support smbus emulation

We can do smbus emulation so flag this and drop the duplicate
flags implied from smbus emulation.
Acked-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: NSundar R Iyer <sundar.iyer@stericsson.com>
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

drivers/i2c/busses/i2c-nomadik.c

@@ -803,10 +803,7 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
 
 static unsigned int nmk_i2c_functionality(struct i2c_adapter *adap)
 {
-	return I2C_FUNC_I2C
-		| I2C_FUNC_SMBUS_BYTE_DATA
-		| I2C_FUNC_SMBUS_WORD_DATA
-		| I2C_FUNC_SMBUS_I2C_BLOCK;
+	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
 }
 
 static const struct i2c_algorithm nmk_i2c_algo = {