mfd: stmpe: Fix Wvoid-pointer-to-enum-cast warning

'partnum' is an enum, thus cast of pointer on 64-bit compile test with W=1
causes:

stmpe-i2c.c:90:13: error: cast to smaller integer type 'enum stmpe_partnum' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: krzk

drivers/mfd/stmpe-i2c.c

@@ -87,7 +87,7 @@ stmpe_i2c_probe(struct i2c_client *i2c)
 		dev_info(&i2c->dev, "matching on node name, compatible is preferred\n");
 		partnum = id->driver_data;
 	} else
-		partnum = (enum stmpe_partnum)of_id->data;
+		partnum = (uintptr_t)of_id->data;
 
 	return stmpe_probe(&i2c_ci, partnum);
 }