bf16: update real-opcode to Y
bf16: update real-opcode to Y

Change-Id: Iffada62972133c3f6e9ee2ff33f7678c48bf3f5e
(cherry picked from commit 121ea1b1bd5f8b8c79f52e78a009f7ba209230e6)

intelxed/xed,intelxed/xed,intelxed/xed,intelxed/xed