dmaengine: fsl_raid: Fix module autoload

If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.

Export the module alias information using the MODULE_DEVICE_TABLE() macro.

Before this patch:

$ modinfo drivers/dma/fsl_raid.ko | grep alias
$

After this patch:

$ modinfo drivers/dma/fsl_raid.ko | grep alias
alias: of:N*T*Cfsl,raideng-v1.0C*
alias: of:N*T*Cfsl,raideng-v1.0

Signed-off-by: Javier Martinez Canillas <[e-mail]>
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/fsl_raid.c

···
 	{ .compatible = "fsl,raideng-v1.0", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, fsl_re_ids);
 
 static struct platform_driver fsl_re_driver = {
 	.driver = {