hwmon: twl4030-madc-hwmon: add "platform:" prefix for platform modalias

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf (platform: prefix MODALIAS
with "platform:"), the platform modalias is prefixed with "platform:".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: J Keerthy <j-keerthy@ti.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
diff --git a/drivers/hwmon/twl4030-madc-hwmon.c b/drivers/hwmon/twl4030-madc-hwmon.c
index 97e22be..de58191 100644
--- a/drivers/hwmon/twl4030-madc-hwmon.c
+++ b/drivers/hwmon/twl4030-madc-hwmon.c
@@ -154,4 +154,4 @@
 MODULE_DESCRIPTION("TWL4030 ADC Hwmon driver");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("J Keerthy");
-MODULE_ALIAS("twl4030_madc_hwmon");
+MODULE_ALIAS("platform:twl4030_madc_hwmon");