i2c: remove redundant condition

I2C_M_RD is defined as and guaranteed to be 1 and 'flag & I2C_M_RD' is
one or zero. No need for an additional condition to obtain the value.
Signed-off-by: Hsin-Yu.Chen <harry021633@gmail.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
[wsa: slightly updated commit message]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

include/linux/i2c.h

@@ -931,7 +931,7 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap)
 
 static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg)
 {
-	return (msg->addr << 1) | (msg->flags & I2C_M_RD ? 1 : 0);
+	return (msg->addr << 1) | (msg->flags & I2C_M_RD);
 }
 
 u8 *i2c_get_dma_safe_msg_buf(struct i2c_msg *msg, unsigned int threshold);