nvmecontrol: Fix IEEE OUI Identifier output.

[wanpengqian_gmail.com]

Summary

Current sequence of IEEE OUI Identifier output is wrong.

For Intel, current output is e4 d2 5c, specification is 5CD2E4h
For Samsung, current output is 38 25 00, specification is 002538h
also check with Linux nvme-cli. related code is

printf("ieee      : %02x%02x%02x\n",
	ctrl->ieee[2], ctrl->ieee[1], ctrl->ieee[0]);

Test Plan

tested on Intel/Samsung SSDs.

[wanpengqian_gmail.com]

Any comments?

[wanpengqian_gmail.com]

@imp Can we give a go for this?

[wanpengqian_gmail.com]

Here is the compare result with smartctl, for a intel optane 16GB nvme drive

root@szhost:~ # nvmecontrol identify nvme0 | grep e4
IEEE OUI Identifier:         e4 d2 5c
root@szhost:~ # smartctl -a /dev/nvme0 | grep e4
IEEE OUI Identifier:                0x5cd2e4