target: Make spc_parse_naa_6h_vendor_specific non static

This patch makes spc_parse_naa_6h_vendor_specific() available to
other target code, which is required by EXTENDED_COPY when comparing
the received NAA WWN device identifer for locating the associated
se_device backend.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Martin Petersen <martin.petersen@oracle.com>
Cc: Chris Mason <chris.mason@fusionio.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Zach Brown <zab@redhat.com>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Nicholas Bellinger <nab@daterainc.com>

drivers/target/target_core_spc.c

@@ -126,7 +126,7 @@ spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf)
 	return 0;
 }
 
-static void spc_parse_naa_6h_vendor_specific(struct se_device *dev,
+void spc_parse_naa_6h_vendor_specific(struct se_device *dev,
 				      unsigned char *buf)
 {
 	unsigned char *p = &dev->t10_wwn.unit_serial[0];