fsi: master-ast-cf: Add MODULE_FIRMWARE macro

The module loads firmware so add a MODULE_FIRMWARE macro to provide that
information via modinfo.

Fixes: 6a794a27daca ("fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire")
Cc: [e-mail] # 4.19+
Signed-off-by: Juerg Haefliger <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Joel Stanley <[e-mail]>

drivers/fsi/fsi-master-ast-cf.c

···
 
 module_platform_driver(fsi_master_acf);
 MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(FW_FILE_NAME);