Fix up the following pointer-integer size mismatch warning in
max8998_i2c_get_driver_data():
	drivers/mfd/max8998.c: In function 'max8998_i2c_get_driver_data':
	drivers/mfd/max8998.c:178:10: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
		return (int)match->data;
		       ^
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Cc: Mark Brown <broonie@linaro.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
        if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node) {
                const struct of_device_id *match;
                match = of_match_node(max8998_dt_match, i2c->dev.of_node);
-               return (int)match->data;
+               return (int)(long)match->data;
        }
 
        return (int)id->driver_data;