Add reviewed user manual.

Add user manual reviewed.
Update Readme file hierarchy.

Signed-off-by: Preetam S Reddy <preetam.reddy.cp@renesas.com>

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# Date:      Tue Dec 9 21:07:20 2025 -0800
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#	modified:   README.md
#	deleted:    r12uz0207eu0100-renesas-smart-power-controller.pdf
#	new file:   r12uz0207eu0210-renesas-smart-power-controller.pdf
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