platform/olpc: olpc-xo175-ec: Use SPI device ID data to bind device

The driver defines spi_device_id table for module autoloading, but does
not use it in id_table which causes W=1 warning:

drivers/platform/olpc/olpc-xo175-ec.c:737:35: error: ‘olpc_xo175_ec_id_table’ defined but not used [-Werror=unused-const-variable=]

Reference the SPI device ID table, so it can be also used for device
binding.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>

Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Hans de Goede <[e-mail]>
Signed-off-by: Hans de Goede <[e-mail]>

drivers/platform/olpc/olpc-xo175-ec.c

···
 		.of_match_table = olpc_xo175_ec_of_match,
 		.pm = &olpc_xo175_ec_pm_ops,
 	},
+	.id_table	= olpc_xo175_ec_id_table,
 	.probe		= olpc_xo175_ec_probe,
 	.remove		= olpc_xo175_ec_remove,
 };