x86, microcode: Move to a proper location

We've grown a bunch of microcode loader files all prefixed with
"microcode_". They should be under cpu/ because this is strictly
CPU-related functionality so do that and drop the prefix since they're
in their own directory now which gives that prefix. :)

While at it, drop MICROCODE_INTEL_LIB config item and stash the
functionality under CONFIG_MICROCODE_INTEL as it was its only user.

Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>

diff --cc arch/x86/Kconfig
Simple merge

diff --cc arch/x86/kernel/Makefile
Simple merge

diff --cc arch/x86/kernel/cpu/Makefile
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/Makefile
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/amd.c
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/amd_early.c
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/core.c
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/core_early.c
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/intel.c
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/intel_early.c
Simple merge

diff --cc arch/x86/kernel/cpu/microcode/intel_lib.c
Simple merge