media: spi: IR LED: add missing of table registration

MODULE_DEVICE_TABLE(of, <of_match_table> should be called to complete DT
OF mathing mechanism and register it.

Before this patch:
modinfo drivers/media/rc/ir-spi.ko | grep alias

After this patch:
modinfo drivers/media/rc/ir-spi.ko | grep alias
alias: of:N*T*Cir-spi-ledC*
alias: of:N*T*Cir-spi-led

Reported-by: Javier Martinez Canillas <[e-mail]>
Signed-off-by: Daniel Gomez <[e-mail]>
Signed-off-by: Sean Young <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/rc/ir-spi.c

···
 	{ .compatible = "ir-spi-led" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, ir_spi_of_match);
 
 static struct spi_driver ir_spi_driver = {
 	.probe = ir_spi_probe,