[Patch] Add translation of stable_kernel_rules.txt

[Tsugikazu Shibata]

Hello, 

Add translation of stable_kernel_rules.txt into Documentation/ja_JP.

Contents are reviewed by Japanese translation community called "JF".
Thanks a lot!

As always, I am attaching the patch because of UTF-8.

Singed-off-by: Tsugikazu Shibata <tshibata@xxxxxxxxxxxxx>

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Attachment: Add-ja_JP-stable_kernel_rules.txt
Description: Binary data