Add header to vendor commands in effects-log
This patch adds a header preceding the opcode list when printing the
effects-log:
nvme effects-log /dev/nvmex
Admin Commands
ACS0 [Delete I/O Submission Queue ]
00000001
ACS1 [Create I/O Submission Queue ]
00000001
<snip>
Vendor Specific Admin Commands
ACS198 [Unknown ]
00000001
ACS204 [Unknown ]
0002001f
I/O Commands
IOCS0 [Flush ]
00000001
IOCS1 [Write ]
00000003
<snip>
Vendor Specific I/O Commands
IOCS129 [Unknown ]
00000003
The patch does not change binary or json output formats.
Signed-off-by: Andreas Hindborg <andreas.hindborg@wdc.com>