x86/cpu: Fix core name for Sapphire Rapids

Sapphire Rapids uses Golden Cove, not Willow Cove.

Fixes: 53375a5a ("x86/cpu: Resort and comment Intel models")
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210513163904.3083274-1-ak@linux.intel.com