x86/cpu: Drop spurious underscore from RAPTOR_LAKE #define

Convention for all the other "lake" CPUs is all one word.

So s/RAPTOR_LAKE/RAPTORLAKE/

Fixes: fbdb5e8f

 ("x86/cpu: Add Raptor Lake to Intel family")
Reported-by: Rui Zhang <rui.zhang@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20211119170832.1034220-1-tony.luck@intel.com