spi: rspi: drop unneeded MODULE_ALIAS

The MODULE_DEVICE_TABLE already creates proper alias for platform
driver. Having another MODULE_ALIAS causes the alias to be duplicated.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-rspi.c

···
 MODULE_DESCRIPTION("Renesas RSPI bus driver");
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Yoshihiro Shimoda");
-MODULE_ALIAS("platform:rspi");