virtio: Add ID for virtio SPI

Add VIRTIO_ID_SPI definition for virtio SPI.

Signed-off-by: Haixu Cui <[e-mail]>
Reviewed-by: Viresh Kumar <[e-mail]>
Reviewed-by: Alex Bennée <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

include/uapi/linux/virtio_ids.h

···
 #define VIRTIO_ID_AUDIO_POLICY		39 /* virtio audio policy */
 #define VIRTIO_ID_BT			40 /* virtio bluetooth */
 #define VIRTIO_ID_GPIO			41 /* virtio gpio */
+#define VIRTIO_ID_SPI			45 /* virtio spi */
 
 /*
  * Virtio Transitional IDs