x86: move x86-specific documentation into Documentation/x86

The current organization of the x86 documentation makes it appear as
if the "i386" documentation doesn't apply to x86-64, which is does.
Thus, move that documentation into Documentation/x86, and move the
x86-64-specific stuff into Documentation/x86/x86_64 with the eventual
goal to move stuff that isn't actually 64-bit specific back into
Documentation/x86.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/Documentation/i386/IO-APIC.txt b/Documentation/x86/i386/IO-APIC.txt
similarity index 100%
rename from Documentation/i386/IO-APIC.txt
rename to Documentation/x86/i386/IO-APIC.txt

diff --git a/Documentation/i386/boot.txt b/Documentation/x86/i386/boot.txt
similarity index 100%
rename from Documentation/i386/boot.txt
rename to Documentation/x86/i386/boot.txt

diff --git a/Documentation/i386/usb-legacy-support.txt b/Documentation/x86/i386/usb-legacy-support.txt
similarity index 100%
rename from Documentation/i386/usb-legacy-support.txt
rename to Documentation/x86/i386/usb-legacy-support.txt

diff --git a/Documentation/i386/zero-page.txt b/Documentation/x86/i386/zero-page.txt
similarity index 100%
rename from Documentation/i386/zero-page.txt
rename to Documentation/x86/i386/zero-page.txt

diff --git a/Documentation/x86_64/00-INDEX b/Documentation/x86/x86_64/00-INDEX
similarity index 100%
rename from Documentation/x86_64/00-INDEX
rename to Documentation/x86/x86_64/00-INDEX

diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
similarity index 100%
rename from Documentation/x86_64/boot-options.txt
rename to Documentation/x86/x86_64/boot-options.txt

diff --git a/Documentation/x86_64/cpu-hotplug-spec b/Documentation/x86/x86_64/cpu-hotplug-spec
similarity index 100%
rename from Documentation/x86_64/cpu-hotplug-spec
rename to Documentation/x86/x86_64/cpu-hotplug-spec

diff --git a/Documentation/x86_64/fake-numa-for-cpusets b/Documentation/x86/x86_64/fake-numa-for-cpusets
similarity index 100%
rename from Documentation/x86_64/fake-numa-for-cpusets
rename to Documentation/x86/x86_64/fake-numa-for-cpusets

diff --git a/Documentation/x86_64/kernel-stacks b/Documentation/x86/x86_64/kernel-stacks
similarity index 100%
rename from Documentation/x86_64/kernel-stacks
rename to Documentation/x86/x86_64/kernel-stacks

diff --git a/Documentation/x86_64/machinecheck b/Documentation/x86/x86_64/machinecheck
similarity index 100%
rename from Documentation/x86_64/machinecheck
rename to Documentation/x86/x86_64/machinecheck

diff --git a/Documentation/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt
similarity index 100%
rename from Documentation/x86_64/mm.txt
rename to Documentation/x86/x86_64/mm.txt

diff --git a/Documentation/x86_64/uefi.txt b/Documentation/x86/x86_64/uefi.txt
similarity index 100%
rename from Documentation/x86_64/uefi.txt
rename to Documentation/x86/x86_64/uefi.txt