i2c: pxa: Fix compile warning in 64bit mode

Fix below warning message, coming from 64 bit toolchain.

drivers/i2c/busses/i2c-pxa.c:1237:15:
warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
Signed-off-by: Yipeng Yao <ypyao@marvell.com>
[vaibhav.hiremath@linaro.org: Updated Changelog]
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-pxa.c

@@ -1116,7 +1116,9 @@ static int i2c_pxa_probe_dt(struct platform_device *pdev, struct pxa_i2c *i2c,
 		i2c->use_pio = 1;
 	if (of_get_property(np, "mrvl,i2c-fast-mode", NULL))
 		i2c->fast_mode = 1;
-	*i2c_types = (u32)(of_id->data);
+
+	*i2c_types = (enum pxa_i2c_types)(of_id->data);
+
 	return 0;
 }