linux-next: build warning after merge of the tip tree

[Stephen Rothwell]

Hi all,

After merging the tip tree, today's linux-next build (x86_64 allnoconfig)
produced this warning:

arch/x86/kernel/cpu/bugs.c:79:12: warning: 'spectre_v2_enabled' defined but not used [-Wunused-variable]
 static int spectre_v2_enabled = SPECTRE_V2_NONE;
            ^

Introduced by commit

  54d5103245ff ("x86/spectre: Add boot time option to select Spectre v2 mitigation")

-- 
Cheers,
Stephen Rothwell