POWERPC: Bring the fs_no calculation to the relevant SoC enumeration

The fs_no mean used to be fs_enet driver driven, hence it was an
enumeration across all the possible fs_enet "users" in the SoC. Now, with
QE on the pipeline, and to make DTS descriptions more clear, fs_no features
relevant SoC part number, with additional field to describe the SoC type.

Another reason for that is now not only fs_enet is going to utilize those
stuff. There might be UART, HLDC, and even USB, so to prevent confusion and
be ready for upcoming OF_device transfer, fs_enet and cpm_uart drivers were
updated in that concern, as well as the relevant DTS.

Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index f358ee6..3e2a3a2 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -944,12 +944,13 @@
 extern void fs_mii_disconnect(struct net_device *dev);
 
 static struct net_device *fs_init_instance(struct device *dev,
-		const struct fs_platform_info *fpi)
+		struct fs_platform_info *fpi)
 {
 	struct net_device *ndev = NULL;
 	struct fs_enet_private *fep = NULL;
 	int privsize, i, r, err = 0, registered = 0;
 
+	fpi->fs_no = fs_get_id(fpi);
 	/* guard */
 	if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX)
 		return ERR_PTR(-EINVAL);