x86/bugs: Increase the x86 bugs vector size to two u32s

Upstream commit: 0e52740ffd10c6c316837c6c128f460f1aaba1ea

There was never a doubt in my mind that they would not fit into a single
u32 eventually.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>