regulator: bd70528: Add MODULE_ALIAS to allow module auto loading

The bd70528 regulator driver is probed by MFD driver. Add MODULE_ALIAS
in order to allow udev to load the module when MFD sub-device cell for
regulators is added.

Fixes: 99ea37bd1e ("regulator: bd70528: Support ROHM BD70528 regulator block")
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/20191023121452.GA1812@localhost.localdomain
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/bd70528-regulator.c

@@ -286,3 +286,4 @@ module_platform_driver(bd70528_regulator);
 MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
 MODULE_DESCRIPTION("BD70528 voltage regulator driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bd70528-pmic");